* Tcpdump filters, problem with UDP and 2.4.x
@ 2001-10-13 20:12 David Ford
2001-10-15 9:16 ` James Stevenson
0 siblings, 1 reply; 3+ messages in thread
From: David Ford @ 2001-10-13 20:12 UTC (permalink / raw)
To: linux-kernel
I see a lot of "UDP: bad checksum. ..." between two of my servers. I
haven't attached a tcpdump output of the packets because a) the packets
between machine A and B travel through a GRE tunnel and b) does anyone
have tcpdump filters or know how to finagle tcpdump into dumping the
embedded packet instead of the GRE header'd packet?
If not, I'll supply tcpdump output of the traffic.
David
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Tcpdump filters, problem with UDP and 2.4.x
2001-10-13 20:12 Tcpdump filters, problem with UDP and 2.4.x David Ford
@ 2001-10-15 9:16 ` James Stevenson
2001-10-16 19:39 ` David Ford
0 siblings, 1 reply; 3+ messages in thread
From: James Stevenson @ 2001-10-15 9:16 UTC (permalink / raw)
To: David Ford, linux-kernel
----- Original Message -----
From: "David Ford" <david@blue-labs.org>
To: <linux-kernel@vger.kernel.org>
Sent: Saturday, October 13, 2001 9:12 PM
Subject: Tcpdump filters, problem with UDP and 2.4.x
> I see a lot of "UDP: bad checksum. ..." between two of my servers. I
> haven't attached a tcpdump output of the packets because a) the packets
> between machine A and B travel through a GRE tunnel and b) does anyone
> have tcpdump filters or know how to finagle tcpdump into dumping the
> embedded packet instead of the GRE header'd packet?
>
id this for NFS udp traffic ?
if it is then you will see it i have seen this on both 2.2.x and 2.4.x
kernels
it only shows up on the nfs server side for me though.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Tcpdump filters, problem with UDP and 2.4.x
2001-10-15 9:16 ` James Stevenson
@ 2001-10-16 19:39 ` David Ford
0 siblings, 0 replies; 3+ messages in thread
From: David Ford @ 2001-10-16 19:39 UTC (permalink / raw)
To: James Stevenson; +Cc: linux-kernel
No, it is for DNS traffic.
James Stevenson wrote:
>>I see a lot of "UDP: bad checksum. ..." between two of my servers. I
>>haven't attached a tcpdump output of the packets because a) the packets
>>between machine A and B travel through a GRE tunnel and b) does anyone
>>have tcpdump filters or know how to finagle tcpdump into dumping the
>>embedded packet instead of the GRE header'd packet?
>>
>id this for NFS udp traffic ?
>if it is then you will see it i have seen this on both 2.2.x and 2.4.x
>kernels
>it only shows up on the nfs server side for me though.
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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