dhcpcd-discuss

Hi List!

Been quite some time since the last release and many important issues 
have been resolved and of course some new features added.
Here's some highlights:

  *  Only fork when the RA has a RDNSS option AND a valid prefix OR no 
DHCPv6 instruction.
  *  Support ypbind on FreeBSD and OpenBSD.
  *  Handle BSD per interface rtadv kernel flag.
  *  Add a reject route for the delegated prefix so that unassigned 
prefixes don't go back upstream.
  *  If not specified, Delegated Prefixes will get an automatic SLA of 
the interface index. If the biggest SLA and the assigned prefix fits 
into a /64 then dhcpcd creates a /64 prefix so that SLAAC works. If 
bigger than /64 is needed then dhcpcd creates one rounded upto the 
nearest multiple of 8. Unless a configured SLA of 0 is assigned, a 
reject route for the Delegated Prefix is installed to stop unassigned 
addresses trying to be resolved upstream. Addresses added from Delegated 
Prefixes now have a default address suffix of 1 instead of using a SLAAC 
style address.
  *  glibc 2.17 has clock_gettime in libc directly, so test for it. test 
for dlopen being in libc as well.
  *  Default to building static for a $PREFIX of \ for non Linux 
platforms if ld.elf-so or similar cannot be found in /libexec.
  *  Add -Wconversion to debug CFLAGS and fix fallout (still a work in 
progress with gcc and/or Linux).
  *  Work with older libc's without O_CLOEXEC.
  *  Ship a compat queue.h for older systems without any TAILQ support.
  *  Don't spam timezone updates unless its actually changed.
  *  Support older Linux kernels where DAD is not reported.
  *  Support IFA_F_NOPREFIXROUTE on Linux (not to self, implement 
similar for NetBSD and for IPv4).
  *  Support ND6_IFF_OVERRIDE_RTADV on BSD.
  *  Document why we don't send both FQDN and hostname options.
  *  Respect RFC4861 MAX_RTR_SOLICITATION_DELAY as specified in section 
6.3.7.
  *  RFC2131 section 4.4.1 states the client SHOULD wait a random time 
between one and ten seconds to desynchronize the use of DHCP at startup. 
Instead we wait a random time between zero and one second to mirror the 
more modern IPv6RS and DHCPv6 standards unless overridden by defining 
RFC2131_STRICT.
  *  Always send a carrier as it's no longer encapsulated in the IPv4 
stack. When stopping and not departed, run with the STOPPED reason but 
do not process it in hooks.
  *  Poll kernel neighbour reachability (SIOCGNBRINFO_IN6) for each 
router instead of sending and listening for Neighbour 
Soliciation/Advertisement packets. The kernel is privy to a lot more 
reachability information than userland is.
  *  Support RTM_GETNEIGH on Linux as well as the polling for NUD 
changes on BSD.
  *  Ensure that ND6_IFF_PERFORMNUD is set.
  *  controlgroup option changes group ownership of the control socket.
  *  Source now compiles on Solaris, just missing the if-sun.c and some 
IPv6 functionality. Work in progress.
  *  Should use arc4random_uniform when wanting a randon number between 
1 and N. Improve the compat arc4random function a little and re-stir on 
fork.
  *  -4 and -6 are now mutually exclusive and when running on a single 
interface per protocol pidfiles are created. This means that other 
control options suchs as -x and -n will require the -4 or -6 option as 
well.
  *  Add a SHA256 implementation by Collin Percival if one in libc/libmd 
not found.
  *  Implement Stable Private Addresses for SLAAC as per RFC7217. Enable 
this as default in dhcpcd.conf.
  *  Log error condition if a new or changed Router Advertisment to 
avoid spamming the log.
  *  Warn when SO_REUSEPORT fails instead of bailing to accomodate dodgy 
Linux headers.
  *  Add an IPv6 link-local address before upping the interface if 
needed. Bring an interface up when we start it and not during discovery. 
As such, stop waiting on carrier for a second if we did.
  *  Add gateway option to enable the gateway or an interface/profile. 
Ensure the option and require options disable the nooption option - last 
wins.
  *  Restarting ntp/yp are not critical and their initialisation 
continues in the background as well so we may as well background the 
restart commands for faster dhcpcd performance.

Download links:
ftp://roy.marples.name/pub/dhcpcd/dhcpcd-6.4.0.tar.bz2
http://roy.marples.name/downloads/dhcpcd/dhcpcd-6.4.0.tar.bz2

Thanks

Roy