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Re: rwhod: Connection refused

daemon@ATHENA.MIT.EDU (Alan Cox)
Wed Apr 17 11:39:22 1996

From: Alan Cox <alan@cymru.net>
To: phil@tazenda.demon.co.uk (Philip Blundell)
Date: 	Wed, 17 Apr 1996 14:42:31 +0100 (BST)
Cc: alan@cymru.net, linux-net@vger.rutgers.edu
In-Reply-To: <Pine.LNX.3.92.960416201232.2794A-100000@ermintrude.disaster.area> from "Philip Blundell" at Apr 16, 96 08:16:37 pm

> > You have a broken machine (probably SunOS) replying to your broadcast
> > with an ICMP unreachable port.
> 
> Ah, thanks.  That was indeed the problem.  The offending machine is
> actually connected with a SLIP link.  Since there isn't really any such
> thing as a broadcast on a point-to-point link, the datagrams are going out
> with that machine's address in the destination field.  Presumably it *is*
> entitled to give a port unreachable here.

No, but it should have dropped the packet or routed it somewhere if its not
its own actual port address.

> I guess the easiest fix is just to take out the line from rwhod that
> reports the errors, and let it fail quietly.  Or I could tell rwhod not to
> transmit on non-broadcast interfaces.

The latter is probably the right approach. 

Alan



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