Re: [Xen-users] Problem start iptables - udp broken

[Torsten Lehmann <tlehmann@xxxxxxxxxxxxx>]

On Mon, 27 Nov 2006, [ISO-8859-1] Abel Martín wrote:

> On 11/26/06, Torsten Lehmann <tlehmann@xxxxxxxxxxxxx> wrote:
> >
> > Hallo xen-users!
> >
> > I have a problem with configuration iptables.
> > Whats going wrong?
> >
> > regards Torsten
> > Launoc
>
> Did you try disabling TCP/UDP checksums?
> http://wiki.xensource.com/xenwiki/XenFaq#head-4ce9767df34fe1c9cf4f85f7e07cb10110eae9b7
>

## - dump on xenU (client: 123.86, NFSserver=123.85)
l1:~# ethtool -K eth0 tx off

l1:~# tcpdump -vv -n -i eth0  host NFSserver and udp
17:15:04.814142 IP (tos 0x0, ttl  64, id 65529, offset 0, flags [+],
length: 1500) 193.123.123.86.2879998019 > 193.123.123.85.2049: 1472 write
[|nfs]
17:15:04.814203 IP (tos 0x0, ttl  64, id 65529, offset 1480, flags [none],
length: 720) 193.123.123.86 > 193.123.123.85: udp
17:15:05.266099 IP (tos 0x0, ttl  64, id 65530, offset 0, flags [+],
length: 1500) 193.123.123.86.2896775235 > 193.123.123.85.2049: 1472 write
[|nfs]
17:15:05.266176 IP (tos 0x0, ttl  64, id 65530, offset 1480, flags [none],
length: 720) 193.123.123.86 > 193.123.123.85: udp
17:15:05.714048 IP (tos 0x0, ttl  64, id 65531, offset 0, flags [+],
length: 1500) 193.123.123.86.2913552451 > 193.123.123.85.2049: 1472 write
[|nfs]
17:15:05.714122 IP (tos 0x0, ttl  64, id 65531, offset 1480, flags [none],
length: 720) 193.123.123.86 > 193.123.123.85: udp


## - dump on xen0
l0:~# tcpdump -vv -n -i eth0  host NFSserver and udp
## ... nothing...

- xen0:eth0 seen to be blind...

Any solutions?


regards Torsten
Launoc

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