*BSD News Article 84622


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From: bob@nemesis.its.berkeley.edu (bob prohaska)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Ping responds with no interfaces up?!
Date: 10 Dec 1996 03:54:03 GMT
Organization: Data Communication and Newtorking Services
Lines: 22
Message-ID: <58imsr$bp8@agate.berkeley.edu>
NNTP-Posting-Host: nemesis.its.berkeley.edu
Summary: There seems to be an identity crisis
Keywords: ping tcp/ip network inet
X-Newsreader: TIN [version 1.2 PL2]

Hi all,

This has to be a dumb configuration problem, but I can't find it
so here goes:

I've got a two host ethernet, but one host (the FreeBSD box) won't 
answer a ping from the other, and if the FreeBSD box pings the other
two packets are reported returned. If all interfaces are taken down a 
ping of the other host by ip number returns a response, with a
delay of one or two milliseconds. 

Somehow I've got an ip number wrong, but the ifconfig statements look
right, and in any case with all interfaces down that seems not to matter.

What is it that answers a ping, and where does it get its identity?

thanks for reading

bob