Re: [Xen-users] dhcp service in Dom0 not working properly

[Tibor Pittich <Tibor.Pittich@xxxxxxxxxx>]

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Alejandro Martini, 26.8.2007 17:49:

> I have the following problem. I've set up a dhcp server at Dom0 level, in
> order to provide ip addresses for the computers on my LAN. However, the dhcp
> daemon is not answering queries, nor giving addresses.
>
> ...
>
> If i try a tcpdump -i eth0 'dst port 67', i can't even see DHCPREQUEST
> packets reaching the server (client machines, based on W2K, keep retrying
> until they give up, wihtout getting a valid address).

You should try tcpdump with -vv. If you see udp checksum errors then
disable tx checksumming with this command:
/usr/sbin/ethtool -K eth0 tx off

- --
professional home page                  -> http://tibor.pittich.sk
personal blog                           -> http://blog.phuture.sk

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