On Thu, 2006-12-10 at 16:10 -0400, Andy Gospodarek wrote: > On Thu, Oct 12, 2006 at 11:24:31AM -0700, Stephen Hemminger wrote: > > Flush the forwarding table when carrier is lost. This helps for > > availability because we don't want to forward to a downed device and > > new packets may come in on other links. > > > > Signed-off-by: Stephen Hemminger <shemminger at osdl.org> > > > > Stephen, > > This is an excellent idea I am on the other extreme - this is problematic if you have a large table already learnt. Agrevate that with an unstable link and it gets a lot worse. Both of which dont sound unrealistic in say a wireless AP. A more sane policy i have seen is a timer that flushes the table after a programmed period; this way you counter a flipflop-ing link. IOW, the best place is to have this in some user space daemon. If it has to be in the kernel, can you add a systcl to disable it? cheers, jamal
