svn commit: r245525 - head/etc/rc.d
Gleb Smirnoff
glebius at FreeBSD.org
Thu Jan 17 09:38:13 UTC 2013
On Thu, Jan 17, 2013 at 11:07:23AM +0900, Hiroki Sato wrote:
H> bz> Author: bz
H> bz> Date: Thu Jan 17 01:27:39 2013
H> bz> New Revision: 245525
H> bz> URL: http://svnweb.freebsd.org/changeset/base/245525
H> bz>
H> bz> Log:
H> bz> Add a conditional sleep 1 in case we add any IPv6 addresses to interfaces.
H> bz> Do this per jail started, not per address. This will allow DAD to complete
H> bz> and services to properly start. Before we have seen problems with services
H> bz> trying to start before the IPv6 address was available to use and thus
H> bz> erroring and failing to start.
H> bz>
H> bz> MFC after: 3 days
H>
H> This may be too pedantic, but I think this delay should use
H> DupAddrDetectTransmits (net.inet6.ip6.dad_count). The default value
H> of RETRANS_TIMER and MAX_RTR_SOLICITATION_DELAY in RFC 4861 is 1 sec,
H> so the theoretical delay value is (DupAddrDetectTransmits *
H> RETRANS_TIMER + MAX_RTR_SOLICITATION_DELAY). The rc.d/netif script
H> uses this value (typically 2 seconds) for DAD.
H>
H> I understand a simple 1 second delay works in practice, though.
I'd prefer even a sleep loop that exits once address is avaialable. An
example is in ports/net/zebra/files/zebra.sh.in.
--
Totus tuus, Glebius.
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