DHCPOFFER sent to wrong MAC?
George C. Kaplan
gckaplan at ack.berkeley.edu
Sat Aug 19 05:54:07 UTC 2006
On Aug 18, 2006, at 6:01 PM, George C. Kaplan wrote:
>
> This discussion rings a bell. I saw some weird broadcast-related
> behavior on FreeBSD 6.0 a few months back. That was with a dhcp
> client
> sending unicast renewal packets (normal), that were going on the wire
> with a broadcast Ethernet address. See the attached tcpdump packet
> trace.
Hmm. My attachment didn't make it. Here it is in-line:
13:20:19.606964 00:02:2d:xx:xx:xx > ff:ff:ff:ff:ff:ff, ethertype IPv4
(0x0800), length 342: IP (tos 0x10, ttl 15, id 0, offset 0, flags
[none],
length: 328) XXX.XXX.201.44.68 > XXX.XXX.252.130.67: [udp sum ok]
BOOTP/DHCP, Request from 00:02:2d:xx:xx:xx, length: 300, xid:
0xa7391b18, flags:
[none] (0x0000)
Client IP: XXX.XXX.201.44
Client Ethernet Address: 00:02:2d:xx:xx:xx
Vendor-rfc1048:
DHCP:REQUEST
PR:SM+BR+TZ+DG+DN+NS+HN
--
George C. Kaplan gckaplan at ack.berkeley.edu
IST - Infrastructure Services 510-643-0496
University of California at Berkeley
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