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439 lines
18 KiB
439 lines
18 KiB
version 2.51
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Add support for internationalised DNS. Non-ASCII characters
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in domain names found in /etc/hosts, /etc/ethers and
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/etc/dnsmasq.conf will be correctly handled by translation to
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punycode, as specified in RFC3490. This function is only
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available if dnsmasq is compiled with internationalisation
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support, and adds a dependency on GNU libidn. Without i18n
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support, dnsmasq continues to be compilable with just
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standard tools. Thanks to Yves Dorfsman for the
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suggestion.
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Add two more environment variables for lease-change scripts:
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First, DNSMASQ_SUPPLIED_HOSTNAME; this is set to the hostname
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supplied by a client, even if the actual hostname used is
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over-ridden by dhcp-host or dhcp-ignore-names directives.
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Also DNSMASQ_RELAY_ADDRESS which gives the address of
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a DHCP relay, if used.
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Suggestions from Michael Rack.
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Fix regression which broke echo of relay-agent
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options. Thanks to Michael Rack for spotting this.
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Don't treat option 67 as being interchangeable with
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dhcp-boot parameters if it's specified as
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dhcp-option-force.
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Make the code to call scripts on lease-change compile-time
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optional. It can be switched off by editing src/config.h
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or building with "make COPTS=-DNO_SCRIPT".
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Make the TFTP server cope with filenames from Windows/DOS
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which use '\' as pathname separator. Thanks to Ralf for
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the patch.
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Updated Polish translation. Thanks to Jan Psota.
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Warn if an IP address is duplicated in /etc/ethers. Thanks
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to Felix Schwarz for pointing this out.
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Teach --conf-dir to take an option list of file suffices
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which will be ignored when scanning the directory. Useful
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for backup files etc. Thanks to Helmut Hullen for the
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suggestion.
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Add new DHCP option named tftpserver-address, which
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corresponds to the third argument of dhcp-boot. This
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allows the complete functionality of dhcp-boot to be
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replicated with dhcp-option. Useful when using
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dhcp-optsfile.
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Test which upstream nameserver to use every 10 seconds
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or 50 queries and not just when a query times out and
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is retried. This should improve performance when there
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is a slow nameserver in the list. Thanks to Joe for the
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suggestion.
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Don't do any PXE processing, even for clients with the
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correct vendorclass, unless at least one pxe-prompt or
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pxe-service option is given. This stops dnsmasq
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interfering with proxy PXE subsystems when it is just
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the DHCP server. Thanks to Spencer Clark for spotting this.
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Limit the blocksize used for TFTP transfers to a value
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which avoids packet fragmentation, based on the MTU of the
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local interface. Many netboot ROMs can't cope with
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fragmented packets.
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Honour dhcp-ignore configuration for PXE and proxy-PXE
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requests. Thanks to Niels Basjes for the bug report.
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Updated French translation. Thanks to Gildas Le Nadan.
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version 2.50
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Fix security problem which allowed any host permitted to
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do TFTP to possibly compromise dnsmasq by remote buffer
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overflow when TFTP enabled. Thanks to Core Security
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Technologies and Iván Arce, Pablo Hernán Jorge, Alejandro
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Pablo Rodriguez, Martín Coco, Alberto Soliño Testa and
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Pablo Annetta. This problem has Bugtraq id: 36121
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and CVE: 2009-2957
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Fix a problem which allowed a malicious TFTP client to
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crash dnsmasq. Thanks to Steve Grubb at Red Hat for
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spotting this. This problem has Bugtraq id: 36120 and
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CVE: 2009-2958
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version 2.49
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Fix regression in 2.48 which disables the lease-change
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script. Thanks to Jose Luis Duran for spotting this.
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Log TFTP "file not found" errors. These were not logged,
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since a normal PXELinux boot generates many of them, but
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the lack of the messages seems to be more confusing than
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routinely seeing them when there is no real error.
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Update Spanish translation. Thanks to Chris Chatham.
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version 2.48
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Archived the extensive, backwards, changelog to
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CHANGELOG.archive. The current changelog now runs from
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version 2.43 and runs conventionally.
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Fixed bug which broke binding of servers to physical
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interfaces when interface names were longer than four
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characters. Thanks to MURASE Katsunori for the patch.
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Fixed netlink code to check that messages come from the
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correct source, and not another userspace process. Thanks
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to Steve Grubb for the patch.
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Maintainability drive: removed bug and missing feature
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workarounds for some old platforms. Solaris 9, OpenBSD
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older than 4.1, Glibc older than 2.2, Linux 2.2.x and
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DBus older than 1.1.x are no longer supported.
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Don't read included configuration files more than once:
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allows complex configuration structures without problems.
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Mark log messages from the various subsystems in dnsmasq:
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messages from the DHCP subsystem now have the ident string
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"dnsmasq-dhcp" and messages from TFTP have ident
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"dnsmasq-tftp". Thanks to Olaf Westrik for the patch.
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Fix possible infinite DHCP protocol loop when an IP
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address nailed to a hostname (not a MAC address) and a
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host sometimes provides the name, sometimes not.
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Allow --addn-hosts to take a directory: all the files
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in the directory are read. Thanks to Phil Cornelius for
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the suggestion.
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Support --bridge-interface on all platforms, not just BSD.
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Added support for advanced PXE functions. It's now
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possible to define a prompt and menu options which will
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be displayed when a client PXE boots. It's also possible to
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hand-off booting to other boot servers. Proxy-DHCP, where
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dnsmasq just supplies the PXE information and another DHCP
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server does address allocation, is also allowed. See the
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--pxe-prompt and --pxe-service keywords. Thanks to
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Alkis Georgopoulos for the suggestion and Guilherme Moro
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and Michael Brown for assistance.
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Improvements to DHCP logging. Thanks to Tom Metro for
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useful suggestions.
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Add ability to build dnsmasq without DHCP support. To do
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this, edit src/config.h or build with
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"make COPTS=-DNO_DHCP". Thanks to Mahavir Jain for the patch.
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Added --test command-line switch - syntax check
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configuration files only.
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Updated French translation. Thanks to Gildas Le Nadan.
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version 2.47
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Updated French translation. Thanks to Gildas Le Nadan.
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Fixed interface enumeration code to work on NetBSD
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5.0. Thanks to Roy Marples for the patch.
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Updated config.h to use the same location for the lease
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file on NetBSD as the other *BSD variants. Also allow
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LEASEFILE and CONFFILE symbols to be overriden in CFLAGS.
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Handle duplicate address detection on IPv6 more
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intelligently. In IPv6, an interface can have an address
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which is not usable, because it is still undergoing DAD
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(such addresses are marked "tentative"). Attempting to
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bind to an address in this state returns an error,
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EADDRNOTAVAIL. Previously, on getting such an error,
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dnsmasq would silently abandon the address, and never
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listen on it. Now, it retries once per second for 20
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seconds before generating a fatal error. 20 seconds should
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be long enough for any DAD process to complete, but can be
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adjusted in src/config.h if necessary. Thanks to Martin
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Krafft for the bug report.
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Add DBus introspection. Patch from Jeremy Laine.
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Update Dbus configuration file. Patch from Colin Walters.
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Fix for this bug:
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http://bugs.freedesktop.org/show_bug.cgi?id=18961
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Support arbitrarily encapsulated DHCP options, suggestion
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and initial patch from Samium Gromoff. This is useful for
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(eg) gPXE, which expect all its private options to be
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encapsulated inside a single option 175. So, eg,
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dhcp-option = encap:175, 190, "iscsi-client0"
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dhcp-option = encap:175, 191, "iscsi-client0-secret"
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will provide iSCSI parameters to gPXE.
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Enhance --dhcp-match to allow testing of the contents of a
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client-sent option, as well as its presence. This
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application in mind for this is RFC 4578
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client-architecture specifiers, but it's generally useful.
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Joey Korkames suggested the enhancement.
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Move from using the IP_XMIT_IF ioctl to IP_BOUND_IF on
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OpenSolaris. Thanks to Bastian Machek for the heads-up.
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No longer complain about blank lines in
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/etc/ethers. Thanks to Jon Nelson for the patch.
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Fix binding of servers to physical devices, eg
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--server=/domain/1.2.3.4@eth0 which was broken from 2.43
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onwards unless --query-port=0 set. Thanks to Peter Naulls
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for the bug report.
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Reply to DHCPINFORM requests even when the supplied ciaddr
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doesn't fall in any dhcp-range. In this case it's not
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possible to supply a complete configuration, but
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individually-configured options (eg PAC) may be useful.
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Allow the source address of an alias to be a range:
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--alias=192.168.0.0,10.0.0.0,255.255.255.0 maps the whole
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subnet 192.168.0.0->192.168.0.255 to 10.0.0.0->10.0.0.255,
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as before.
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--alias=192.168.0.10-192.168.0.40,10.0.0.0,255.255.255.0
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maps only the 192.168.0.10->192.168.0.40 region. Thanks to
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Ib Uhrskov for the suggestion.
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Don't dynamically allocate DHCP addresses which may break
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Windows. Addresses which end in .255 or .0 are broken in
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Windows even when using supernetting.
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--dhcp-range=192.168.0.1,192.168.1.254,255,255,254.0 means
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192.168.0.255 is a valid IP address, but not for Windows.
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See Microsoft KB281579. We therefore no longer allocate
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these addresses to avoid hard-to-diagnose problems.
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Update Polish translation. Thanks to Jan Psota.
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Delete the PID-file when dnsmasq shuts down. Note that by
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this time, dnsmasq is normally not running as root, so
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this will fail if the PID-file is stored in a root-owned
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directory; such failure is silently ignored. To take
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advantage of this feature, the PID-file must be stored in a
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directory owned and write-able by the user running
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dnsmasq.
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version 2.46
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Allow --bootp-dynamic to take a netid tag, so that it may
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be selectively enabled. Thanks to Olaf Westrik for the
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suggestion.
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Remove ISC-leasefile reading code. This has been
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deprecated for a long time, and last time I removed it, it
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ended up going back by request of one user. This time,
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it's gone for good; otherwise it would need to be
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re-worked to support multiple domains (see below).
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Support DHCP clients in multiple DNS domains. This is a
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long-standing request. Clients are assigned to a domain
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based in their IP address.
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Add --dhcp-fqdn flag, which changes behaviour if DNS names
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assigned to DHCP clients. When this is set, there must be
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a domain associated with each client, and only
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fully-qualified domain names are added to the DNS. The
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advantage is that the only the FQDN needs to be unique,
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so that two or more DHCP clients can share a hostname, as
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long as they are in different domains.
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Set environment variable DNSMASQ_DOMAIN when invoking
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lease-change script. This may be useful information to
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have now that it's variable.
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Tighten up data-checking code for DNS packet
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handling. Thanks to Steve Dodd who found certain illegal
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packets which could crash dnsmasq. No memory overwrite was
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possible, so this is not a security issue beyond the DoS
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potential.
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Update example config dhcp option 47, the previous
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suggestion generated an illegal, zero-length,
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option. Thanks to Matthias Andree for finding this.
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Rewrite hosts-file reading code to remove the limit of
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1024 characters per line. John C Meuser found this.
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Create a net-id tag with the name of the interface on
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which the DHCP request was received.
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Fixed minor memory leak in DBus code, thanks to Jeremy
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Laine for the patch.
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Emit DBus signals as the DHCP lease database
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changes. Thanks to Jeremy Laine for the patch.
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Allow for more that one MAC address in a dhcp-host
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line. This configuration tells dnsmasq that it's OK to
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abandon a DHCP lease of the fixed address to one MAC
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address, if another MAC address in the dhcp-host statement
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asks for an address. This is useful to give a fixed
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address to a host which has two network interfaces
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(say, a laptop with wired and wireless interfaces.)
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It's very important to ensure that only one interface
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at a time is up, since dnsmasq abandons the first lease
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and re-uses the address before the leased time has
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elapsed. John Gray suggested this.
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Tweak the response to a DHCP request packet with a wrong
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server-id when --dhcp-authoritative is set; dnsmasq now
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returns a DHCPNAK, rather than silently ignoring the
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packet. Thanks to Chris Marget for spotting this
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improvement.
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Add --cname option. This provides a limited alias
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function, usable for DHCP names. Thanks to AJ Weber for
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suggestions on this.
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Updated contrib/webmin with latest version from Neil
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Fisher.
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Updated Polish translation. Thanks to Jan Psota.
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Correct the text names for DHCP options 64 and 65 to be
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"nis+-domain" and "nis+-servers".
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Updated Spanish translation. Thanks to Chris Chatham.
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Force re-reading of /etc/resolv.conf when an "interface
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up" event occurs.
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version 2.45
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Fix total DNS failure in release 2.44 unless --min-port
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specified. Thanks to Steven Barth and Grant Coady for
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bugreport. Also reject out-of-range port spec, which could
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break things too: suggestion from Gilles Espinasse.
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version 2.44
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Fix crash when unknown client attempts to renew a DHCP
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lease, problem introduced in version 2.43. Thanks to
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Carlos Carvalho for help chasing this down.
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Fix potential crash when a host which doesn't have a lease
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does DHCPINFORM. Again introduced in 2.43. This bug has
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never been reported in the wild.
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Fix crash in netlink code introduced in 2.43. Thanks to
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Jean Wolter for finding this.
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Change implementation of min_port to work even if min-port
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is large.
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Patch to enable compilation of latest Mac OS X. Thanks to
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David Gilman.
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Update Spanish translation. Thanks to Christopher Chatham.
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version 2.43
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Updated Polish translation. Thanks to Jan Psota.
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Flag errors when configuration options are repeated
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illegally.
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Further tweaks for GNU/kFreeBSD
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Add --no-wrap to msgmerge call - provides nicer .po file
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format.
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Honour lease-time spec in dhcp-host lines even for
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BOOTP. The user is assumed to known what they are doing in
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this case. (Hosts without the time spec still get infinite
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leases for BOOTP, over-riding the default in the
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dhcp-range.) Thanks to Peter Katzmann for uncovering this.
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Fix problem matching relay-agent ids. Thanks to Michael
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Rack for the bug report.
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Add --naptr-record option. Suggestion from Johan
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Bergquist.
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Implement RFC 5107 server-id-override DHCP relay agent
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option.
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Apply patches from Stefan Kruger for compilation on
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Solaris 10 under Sun studio.
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Yet more tweaking of Linux capability code, to suppress
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pointless wingeing from kernel 2.6.25 and above.
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Improve error checking during startup. Previously, some
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errors which occurred during startup would be worked
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around, with dnsmasq still starting up. Some were logged,
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some silent. Now, they all cause a fatal error and dnsmasq
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terminates with a non-zero exit code. The errors are those
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associated with changing uid and gid, setting process
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capabilities and writing the pidfile. Thanks to Uwe
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Gansert and the Suse security team for pointing out
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this improvement, and Bill Reimers for good implementation
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suggestions.
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Provide NO_LARGEFILE compile option to switch off largefile
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support when compiling against versions of uclibc which
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don't support it. Thanks to Stephane Billiart for the patch.
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Implement random source ports for interactions with
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upstream nameservers. New spoofing attacks have been found
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against nameservers which do not do this, though it is not
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clear if dnsmasq is vulnerable, since to doesn't implement
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recursion. By default dnsmasq will now use a different
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source port (and socket) for each query it sends
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upstream. This behaviour can suppressed using the
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--query-port option, and the old default behaviour
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restored using --query-port=0. Explicit source-port
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specifications in --server configs are still honoured.
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Replace the random number generator, for better
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security. On most BSD systems, dnsmasq uses the
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arc4random() RNG, which is secure, but on other platforms,
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it relied on the C-library RNG, which may be
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guessable and therefore allow spoofing. This release
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replaces the libc RNG with the SURF RNG, from Daniel
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J. Berstein's DJBDNS package.
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Don't attempt to change user or group or set capabilities
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if dnsmasq is run as a non-root user. Without this, the
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change from soft to hard errors when these fail causes
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problems for non-root daemons listening on high
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ports. Thanks to Patrick McLean for spotting this.
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Updated French translation. Thanks to Gildas Le Nadan.
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version 2.42
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The changelog for version 2.42 and earlier is
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available in CHANGELOG.archive.
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