id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
10583	dhcpcd 7.0.2	Tim Tassonis	Tim Tassonis	"A long overdue release, and apologies for the wait
Fixed stuff:
  *  Added support for setproctitle(3)
  *  Kernel RA is no longer disabled when IPv6 is disabled in dhcpcd
  *  DHCPv6 PD is no longer stopped if no Routers are found
  *  If the DHCP leased address is deleted, enter the reboot state
  *  DHCPv6 unicast is no longer performed when not in master mode
  *  dhcpcd will now detect netlink/route socket overflows ad re-sync

The last point is the one that took sometime, mainly because I had to patch the NetBSD kernel on my router where this happens a lot when booting. Technically this was achieved just as in Linux - recv(2) now returns ENOBUFS when the internal receive buffer as overflowed. OpenBSD has a different approach where they flush the internal buffer and send a custom route(4) RTM_DESYNC message. This is supported as well.

Once overflowed, dhcpcd will close the socket to throw away now garbage messages and open a new one. Then it will re-learn interfaces (+ their carrier state and flags) and addresses (+ their flags and lifetimes). dhcpcd will then run the hooks for any departed/arrvied/carrier/nocarrier events resulting from this, in other words it should function as if nothing happened.
"	enhancement	closed	normal	8.3	BOOK	SVN	medium	fixed