kern/185596: in_cksum_skip: out of data by 41310

[Jens Kassel]

>Number:         185596
>Category:       kern
>Synopsis:       in_cksum_skip: out of data by 41310
>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 09 06:30:00 UTC 2014
>Closed-Date:
>Last-Modified:
>Originator:     Jens Kassel
>Release:        8.4
>Organization:
Aptilo Networks
>Environment:
FreeBSD orbytebuild-freebsd84.sth.aptilo.com 8.4-RELEASE FreeBSD 8.4-RELEASE8 #0 r251259: Mon Jun  3 01:14:28 UTC 2013     root at bake.isc.freebsd.org:/usr/obj/usr/src/sys/GENERIC  i386
>Description:
Hi,


We sometimes see messages like this in dmesg and /var/log/messages

in_cksum_skip: out of data by 15810
in_cksum_skip: out of data by 15810
in_cksum_skip: out of data by 15810
in_cksum_skip: out of data by 15810
in_cksum_skip: out of data by 41310

I have checked with tcpdump and these messages seems to be triggered when receiving "ICMP destination unreachable" packets.

Is this a known issue in this release?

Regards,

Jens Kassel
>How-To-Repeat:
"ICMP destination unreachable" packets sometimes trigger this issue but not always.
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: