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From: John Baldwin <jhb@FreeBSD.org>
Date: Mon, 17 May 2010 19:36:56 +0000 (UTC)
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Subject: cvs commit: src/sys/net if_vlan.c
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jhb         2010-05-17 19:36:56 UTC

  FreeBSD src repository

  Modified files:
    sys/net              if_vlan.c 
  Log:
  SVN rev 208212 on 2010-05-17 19:36:56Z by jhb
  
  Ignore failures from removing multicast addresses from the parent (trunk)
  interface when tearing down a vlan interface.  If a trunk interface is
  detached, all of its multicast addresses are removed before the ifnet
  departure eventhandlers are invoked.  This means that all of the multicast
  addresses are removed before the vlan interfaces are removed which causes
  the if_delmulti() calls in the vlan teardown to fail.
  
  In the VLAN_ARRAY case, this left vlan interfaces referencing a no longer
  valid parent interface.  In the !VLAN_ARRAY case, the eventhandler gets
  stuck in an infinite loop retrying vlan_unconfig_locked() forever.  In
  general the callers of vlan_unconfig_locked() do not expect nor handle
  failure, so I believe it is safer to ignore the errors and tear down as
  much of the vlan state as possible.
  
  Silence from:   net@
  MFC after:      4 days
  
  Revision  Changes    Path
  1.150     +14 -13    src/sys/net/if_vlan.c