Date: Thu, 20 Jan 2000 15:19:18 -0800 (PST) From: kannanv@research.bell-labs.com To: freebsd-gnats-submit@FreeBSD.org Subject: kern/16240: ICMP error generation fails to correctly insert IP ID on returned packet Message-ID: <20000120231918.1B499153A5@hub.freebsd.org>
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>Number: 16240
>Category: kern
>Synopsis: ICMP error generation fails to correctly insert IP ID on returned packet
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu Jan 20 15:20:02 PST 2000
>Closed-Date:
>Last-Modified:
>Originator: Kannan Varadhan
>Release: 3.3-RELEASE
>Organization:
Lucent Techn ologies, Bell Lans
>Environment:
FreeBSD yankees.mlb.research.bell-labs.com 3.3-RELEASE FreeBSD 3.3-RELEASE #0: Fri Oct 22 11:38:58 EDT 1999 root@dodgers.mlb.research.bell-labs.com:/usr/src/sys/compile/MH2A235 i386
>Description:
See tcpdump traces below:
16:31:54.084947 0:90:27:61:e7:99 0:50:4:b1:f0:90 0800 162: 135.104.73.82.2094666972 > 135.104.73.129.2049: 120 getattr [|nfs]
4500 0094 012d 0000 3d11 da88 8768 4952
8768 4981 03e5 0801 0080 d6a1 7cda 14dc
0000 0000 0000 0002 0001 86a3 0000 0003
0000 0001 0000
### ORIGINATING PACKET. NOTE IP ID is 0194
16:31:54.085012 0:50:4:b1:f0:90 0:60:1d:9:0:5a 0800 154: 135.104.73.11.2049 > 135.104.73.82.2094666972: reply ok 112 getattr [|nfs]
4500 008c 0194 0000 4011 d79f 8768 490b
8768 4952 0801 03e5 0078 152e 7cda 14dc
0000 0001 0000 0000 0000 0000 0000 0000
0000 0000 0000
### ICMP ERROR RETURNED. NOTE IP ID on returned packet is 9401,
### indicating some byte-ordering problems.
16:31:54.085486 0:60:1d:9:0:5a 0:50:4:b1:f0:90 0800 70: 135.104.73.82 > 135.104.73.11: icmp: 135.104.73.82 udp port 997 unreachable
4500 0038 012e 0000 fd01 1b69 8768 4952
8768 490b 0303 5e31 0000 0000 4500 008c
9401 0000 3e11 d99f 8768 490b 8768 4952
0801 03e5 0078
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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