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Date: Sun, 18 Jul 1999 23:19:13 -0400 (EDT)
From: David Gilbert <dgilbert@velocet.ca>
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Subject: kern/12703: tx0 truncates skip packets
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>Number:         12703
>Category:       kern
>Synopsis:       tx0 truncates skip packets
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Jul 18 20:20:01 PDT 1999
>Closed-Date:
>Last-Modified:
>Originator:     David Gilbert
>Release:        FreeBSD 3.2-STABLE i386
>Organization:
Velocet Communications
>Environment:

FreeBSD 3.2-STABLE #11: Sun Jun 13 00:34:30 EDT 1999

tx0: <SMC 83c170> rev 0x08 int a irq 10 on pci0.10.0
tx0: address 00:e0:29:2d:f2:12, type SMC9432TX, Auto-Neg 100Mbps 

>Description:

tx0 (SMC 10/100 card) truncates skip packets.  This may have something
to do with the bug in my previous pr, but it is not solved by
removing the 'EARLY_RX' define --- which makes me uncomfortable in
general.

When skip is enabled, a tcpdump on another machine on the same ethernet
will show 'truncated packet' for each ping packet that the host
is trying to return.

>How-To-Repeat:

Configur and install /usr/ports/security/skip on two machines, one of
which has a tx0.  Ping in either direction while a third host
watches the ethernet.  You will see 'truncated' packets.

>Fix:
	
I have had to replace tx0 cards with other cards to use skip.


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


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