Subject: Re: odd ipf behaviour
To: Paul Newhouse <>
From: David Maxwell <>
List: current-users
Date: 12/01/1999 16:20:45
> Platform i386 running a rather recent current.
> I have a multi-homed system.  One connection is DSL (de1) and the other is with @home (ne0).
> >From a remote site, A (, I can ping both connections and get responses.
> >From a second remote site, V (, I can get ping to work on the DSL connection
> but, not on the @home connection.  On my local system, while pinging from V, I get:
> 08:39:22.400850 > icmp: echo request

Was this tcpdump from interface ne0?
You have no explicit route to (or its subnet)
You have no ipf rules to force traffic back out ne0.
Your ping replies are likely exiting on de1. 

Try traceroute -i ne0 and see if it tells you why your
replies can't get to V via the @home connection.

> Destination        Gateway            Flags     Refs     Use    Mtu  Interface
> default        UGS         6   903207   1500  de1
> 24                UGS         5    13635   1500  ne0

David Maxwell,| --> Mastery of UNIX, like
mastery of language, offers real freedom. The price of freedom is always dear,
but there's no substitute. Personally, I'd rather pay for my freedom than live
in a bitmapped, pop-up-happy dungeon like NT. - Thomas Scoville