Shorewall devel - Jun 2005 - One more thing about Multi-ISP feature

Remember that when a network interface goes down, the kernel
automatically deletes all routes through that interface. That includes
routes in alternate routing tables that Shorewall has added as part of
the multi-ISP feature.

Bottom line: Shorewall must be restarted if any interface specified in
the /etc/shorewall/providers file goes down then comes back up.

-Tom
--
Tom Eastep    \ Nothing is foolproof to a sufficiently talented fool
Shoreline,     \ http://shorewall.net
Washington USA  \ teastep@shorewall.net
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Bottom line: Shorewall must be restarted if any interface specified in
the /etc/shorewall/providers file goes down then comes back up.

-Tom
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A shorewall restart from ip-up should take care of that.

Jerry