dhcpcd-7 finally enters beta

31 Mar 2017 • 3 min read

It's been a while in the making, but dhcpcd-7.0.0-beta1 is finally here! I have been using this a lot on all supported platforms bar Solaris and it's been very trouble free, so hopefully not many changes (if any? famous last words!) before a RC and final release.

Summary of changes since dhcpcd-6.11.5:

  • source file locations reworked: dhcpcd source is in src dhcpcd hooks are in hooks compat is in compat
  • README split into README.md and BUILDING.md
  • internal routing is now protocol agnostic
  • avoid using __packed and use compile time asserts instead
  • addresses some alignment issues
  • disable some ARP code on kernels which support RFC5227
  • BSD IPv6 kernel settings are now updated to reflect dhcpcd config
  • custom logger has been removed, syslog handles everything as such, the --logfile option has been removed as well. If you need better/earlier logging, get a better syslogger!
  • distinfo and signed distinfo files are now available alongside release taraballs from this point onwards
  • default DBDIR has changed from /var/db to /var/db/dhcpcd
  • /etc/dhcpcd.duid moves to DBDIR/duid
  • /etc/dhcpcd.secret moves to DBDIR/secret
  • lease file names have dhcpcd removed from them as they are now inside a directory of the same name
  • fixed issues with reject routes not working on some platforms
  • improved nl80211 support on Linux for working out the SSID
  • no longer request NTP by default in dhcpcd.conf
  • fix detecting IPv6 DAD on OpenBSD
  • remove custom Solaris DLPI filtering in favour of BPF (note there seems to be a kernel issue where the DHCP fd receives ARP's as well, the only side effect is a noisy syslog)
  • BPF filtering vastly improved so dhcpcd only wake up on ARP or DHCP packets destined for it
  • support for MUD URL (draft-ietf-opsawg-mud-05)
  • if the kernel isn't doing DAD, don't insist on waiting for it to actually do it
  • fix a potential crash where the DHCP or ARP states could be freed before the packet processing loop naturally breaks
  • removed gateway and nogateway options (these can be controlled by the nooption directive which works for more than just gateways)
  • removed ipv6ra_own and ipv6ra_own_default options (these can be controled by the ipv6rs/noipv6rs directive)
  • fix a memory leak on systems where posix_spawnattr_init allocates memory by calling posix_spawnattr_destroy afterwards
  • fix a crash receiving SIGUSR1

I've not done everything I've wanted to, but I feel that many issues have now been addressed and on the whole dhcpcd is in a very good state right now.

Let me know of any issues you find!