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Diffstat (limited to 'RELNOTES')
| -rw-r--r-- | RELNOTES | 97 |
1 files changed, 24 insertions, 73 deletions
@@ -1,6 +1,6 @@ Internet Systems Consortium DHCP Distribution - Version 4.4.2 - 22 January 2020 + Version 4.4.3 + 26 January 2022 Release Notes NEW FEATURES @@ -9,84 +9,35 @@ Please note that that ISC DHCP is now licensed under the Mozilla Public License, MPL 2.0. Please see https://www.mozilla.org/en-US/MPL/2.0/ to read the MPL 2.0 license terms. -While release 4.4.2 is primarily a maintenance release that addresses a number -of defects, it does introduce a few new features: +NOTE: The client and relay components are reaching their End-Of-Life cycle. +4.4.3 is the final release that features them. -- Keama - Keama is a migration utility that assists in converting ISC DHCP - server configuration files to Kea configuration files. It is found in the - keama subdirectory and includes a README.md file with instructions on how - to build it as well as a manpage on its usage. +While release 4.4.3 is primarily a maintenance release that addresses a number +of issues, it does introduce a few of small new features: -- Two new server parameters related to ping checking were added: +1. BIND libraries updated to the latest 9.11.36. This fixes a number of compilation + issues on various systems, including OpenWRT. + [gitlab #218, #171, #180, #192] -1. ping-cltt-secs which allows the user to specify the number of seconds - that must elapse since CLTT before a ping check is conducted. +2. Improve PRNG initialization. There is now a new configure flag --with-randomdev=PATH + that specifies the device to read the initial seed from. That is typically + /dev/random (the default value) or /dev/urandom, but may be other as preferred on + your system. If this option is enabled, dhclient will use the file as a seed. If + not, the earlier algorithm (get last 4 bytes of hardware addresses from all network + interfaces that have them, use current time and process ID). -2. ping-timeout-ms which allows the user to specify the amount of time the - server waits for a ping-check response in milliseconds rather than in - seconds. +3. The IPv6-only preferred option, defined in RFC8925, is now supported. + [gitlab #132] -In general, the areas of focus for ISC DHCP 4.4 were: +4. Compilation fixed for gcc-10. + [gitlab #117] -1. Dynamic DNS additions -2. dhclient improvements -3. Support for dynamic shared libraries +5. Client fix: wrong argument to memcpy() + [gitlab #190] -Dynamic DNS Improvements: - -- We added three new server configuration parameters which influence DDNS - conflict resolution: - - 1. ddns-dual-stack-mixed-mode - alters DNS conflict resolution behavior - to mitigate issues with non-compliant clients in dual stack environments. - - 2. ddns-guard-id-must-match - relaxes the DHCID RR client id matching - requirement of DNS conflict resolution. - - 3. ddns-other-guard-is-dynamic - alters dual-stack-mixed-mode behavior to - allow unguarded DNS entries to be overwritten in certain cases - -- The server now honors update-static-leases parameter for static DHCPv6 - hosts. - -dhclient Improvements: - - - We've added three command line parameters to dhclient: - - 1. --prefix-len-hint - directs dhclient to use the given length as - the prefix length hint when requesting prefixes - - 2. --decline-wait-time - instructs the client to wait the given number - of seconds after declining an IPv4 address before issuing a discover - - 3. --address-prefix-len - specifies the prefix length passed by dhclient - into the client script (via the environment variable ip6_prefixlen) with - each IPv6 address. We added this parameter because we have changed the - default value from 64 to 128 in order to be compliant with RFC3315bis - draft (-09, page 64) and RFC5942, Section 4, point 1. - **WARNING**: The new default value of 128 may not be backwardly compatible - with your environment. If you are operating without a router, such as - between VMs on a host, you may find they cannot see each other with prefix - length of 128. In such cases, you'll need to either provide routing or use - the command line parameter to set the value to 64. Alternatively you may - change the default at compile time by setting DHCLIENT_DEFAULT_PREFIX_LEN - in includes/site.h. - - - dhclient will now generate a DHCPv6 DECLINE message when the client script - indicates a DAD failure - -Dynamic shared library support: - - Configure script, configure.ac+lt, which supports libtool is now provided - with the source tar ball. This script can be used to configure ISC DHCP - to build with libtool and thus use dynamic shared libraries. - -Other Highlights: - - - The server now supports dhcp-cache-threshold for DHCPv6 operations - - The server now supports DHPv6 address allocation based on EUI-64 DUIDs - - Experimental support for alternate relay port in the both the server - and relay for IPv4, IPv6 and 4o6 (see: draft-ietf-dhc-relay-port-10.txt) +6. The server's limit on the size of lease file that can be loaded at start up + is now only enforced on 32-bit systems. + [gitlab #64] For information on how to install, configure and run this software, as well as how to find documentation and report bugs, please consult the |