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[Xen-users] bad udp cksum by dns request in domU

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] bad udp cksum by dns request in domU
From: Torsten Z <torsten-z@xxxxxxxxxx>
Date: 2006年1月28日 22:33:16 +0100
Delivery-date: 2006年1月28日 21:42:21 +0000
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Hello
I use XEN 3.0 in debian sarge. I have a domU1 for routing and firewall. This 
domU1 use 2 network interfaces which is on a bridge 'gate' and the other on 
bridge 'lan'. 
dumU2 use one interface (eth0) on bridge 'lan'.
Then I make a ping out of domU2 to www.debian.de so I get no answer. The name 
isn't resolved. A ping to IP of www.debian.de works fine.
A ping on www.debian.de out of dom0 or a client in my LAN works fine. Only the 
resolving in domU2 crashed.
With tcpdump I see many [bad udp cksum 83ec!].
For example:
21:32:12.457805 aa:00:00:00:00:13 > aa:00:00:00:00:12, ethertype IPv4 
(0x0800), length 73: IP (tos 0x0, ttl 64, id 58967, offset 0, flags [DF], 
length: 59) 192.168.1.200.1045 > sns.kabel-bb.de.domain: [bad udp cksum 
626c!] 47711+ A? www.debian.de. (31)
I don't no what I can do to solve the problem. Any ideas?
Torsten
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