[299] in Zephyr Mailing List
Re: undead zwgcs
daemon@ATHENA.MIT.EDU (Michael Cerrato)
Tue Sep 15 13:52:51 1998
To: zephyr@MIT.EDU
In-Reply-To: Your message of Tue, 15 Sep 1998 13:18:17 -0400.
<199809151718.NAA23126@small-gods.mit.edu>
Date: Tue, 15 Sep 1998 13:42:19 -0400
From: Michael Cerrato <mec@cise.ufl.edu>
+---------- Greg Hudson <ghudson@MIT.EDU> writes:
|
| > Our mail server has 3 network interfaces. Only one out of 3 messages
| > gets delivered. The zephyr server gets the following message:
|
| > zephyrd[16486]: sendit unauthentic fake packet: claimed 204.134.12.100,\
| > real 192.160.121.100
| > zephyrd[16486]: sendit unauthentic fake packet: claimed 192.160.121.161,\
| > real 192.160.121.100
|
| > What's happening is each time it it querying namservice and getting
| > a different answer back in a round-robbin. So it works every 3rd
| > time.
|
| The zephyr server never does any DNS queries; it can't afford to
| block. It sounds like the client is at issue here.
Our observation here has been that a client on a multi-homed host
stuffs one IP address in the packet (the "claimed" address) and then
routes it out a different interface (the "real" address).
Mike
