Date: Tue, 10 Jan 2012 11:24:05 +0100 From: Dennis Koegel <dk@neveragain.de> To: freebsd-net@freebsd.org Subject: Unnecessary sleep in network.subr: ipv6_up() Message-ID: <20120110102405.GA82356@neveragain.de>
next in thread | raw e-mail | index | archive | help
Cheers,
problem: Having a *lot* of IPv6 interfaces (Vlan interfaces in this case)
causes a huge and annoying delay time at system boot in 9.0R.
ipv6_up() in network.subr does this:
+ # wait for DAD
+ sleep `${SYSCTL_N} net.inet6.ip6.dad_count`
+ sleep 1
This happens for each and every interface, at a minimum (and default) of
two seconds per interface.
It seems the behaviour was introduced with r197139. Before this merge,
/etc/rc.d/network_ipv6 did the same sleeps, but only once for the whole
network startup.
I don't see why this should happen per interface, so I suggest the extra
sleeps are limited to "once per network startup" once again (or maybe
removed?).
- D.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20120110102405.GA82356>