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Date:      Wed, 29 Sep 1999 10:34:56 +1000
From:      Gregory Bond <gnb@itga.com.au>
To:        stable@freebsd.org
Subject:   ICMP REDIRECTs
Message-ID:  <199909290034.KAA19147@lightning.itga.com.au>

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Hi.  We have two routers on our local net.  Only one is our default, of course.
When I ping a host that is via the other route, I get 2 ICMP REDIRECTs (one for
the specific host, one for the net) for every outgoing ping packet.

I.e. i'm getting redirects for the second ... nth packets.  I kind-of assumed
the first redirect would update the local routing tables so that subsequent
pings would go direct to the correct gateway.  And "netstat -r" does show a
_host_ entry, but not a _net_ entry.  And another ping to the same host will go
to the correct gateway, but a ping to another host on the same remote net will 
also elicit 2 REDIRECTS per packet, and install a host route.

I am surprised by 2 elements of this behaviour:
 - the REDIRECT doesn't affect the route chosen by the current ping process
 - only the HOST_REDIRECT gets installed in the routing table

Is this the expected behaviour?



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