From: Micah Stetson <micah@cnm-vra.com>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] my cpu-in-vmware problem: it's weird :-)
Date: Wed, 23 Apr 2003 10:08:58 -0700 [thread overview]
Message-ID: <20030423170858.GA2111@epaphras.inhouse.cnm-vra.com> (raw)
In-Reply-To: <Pine.LNX.4.44.0304231010040.30324-100000@maxroach.lanl.gov> <bab9cae1b867e48e342f9c93748cf6e9@plan9.bell-labs.com>
Presotto said:
> 06:34:12.096343 0:50:56:cc:31:ba Broadcast ip 590: 172.16.189.254.bootpc >
> 255.255.255.255.bootps: xid:0x7a2b9449 secs:8 C:172.16.189.254 file
> ""[|bootp]
...
> I don't know the output of tcpdump that well. Having a client address
> (C:172.16.189.254) in a request is a sure sign of a renewal. However,
> there should also be DHCP options in the packet. Does tcpdump not
> print them?
Then Ron Minnich said:
> BTW snoopy gives much more useful output than tcpdump ...
I have no doubt that snoopy is more straightforward and possibly
more flexible than tcpdump, though I haven't had a chance to play
with it, yet. But tcpdump can give better output than the above.
By default, however, it only captures the first 68 bytes of every
packet -- the [|bootp] at the end of the message means that the
packet was truncated in the middle of the bootp information. If
you add '-s 0' to the command line, it will capture whole packets
and give you better output.
Micah
next prev parent reply other threads:[~2003-04-23 17:08 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-23 3:49 ron minnich
2003-04-23 12:52 ` David Presotto
2003-04-23 17:08 ` Micah Stetson [this message]
2003-04-23 17:20 ` David Presotto
2003-04-30 0:24 ` Boyd Roberts
2003-04-30 0:26 ` Boyd Roberts
2003-04-23 15:12 ` Russ Cox
2003-04-23 16:11 ` ron minnich
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