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Date: Tue, 24 Aug 2010 11:18:32 -0700
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Thread-Topic: funny ECMP
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From: "Li, Qing" <qing.li@bluecoat.com>
To: "Ingo Flaschberger" <if@xip.at>
Cc: net@freebsd.org
Subject: RE: funny ECMP
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Hi,

The indirect route is colliding with the interface route, both have
the same mask.

How do you expect this to work ?

How would the routing code differentiate between on-link nodes and
the those needing to be routed through 10.11.11.1 ?

-- Qing

>=20
> one of the problems:
> sysctl -w net.inet.flowtable.enable=3D0
> route add 10.13.13.0/24 10.11.11.1 -weight 2
> ifconfig em1 alias 10.13.13.90/24
>=20
> arp-resolve fails:
> arpresolve: can't allocate llinfo for 10.13.13.95
>=20
> in sys/netinet/in.c:
> in_lltable_lookup calls in_lltable_rtcheck which calls rtalloc1
> rtalloc1 seems to return the first route - and does not check for
more.
>=20
> diag from in_lltable_rtcheck:
> IPv4 address: "10.13.13.95" is not on the network
>=20
> checking now how to repair this.
>=20
> Kind regards,
>  	Ingo Flaschberger