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[Xen-users] routed networking: ping yes, tcp-connection no



Hi,
routed networking does not work for me now.
i can ping the vm and from within the vm, but i can not do any connections.

forwarding is 1.
dom0 is julian.chaosbringer.de is 192.168.1.3.
domU is vm01.chaosbringer.de is 192.168.1.2.
I have no firewall etc running.
Xenversion is 3.0.2.2

I invoked domU with 'xm create -c /dev/null kernel=/boot/vmlinuz-2.6.16-xenU name=small memory=96 disk=file:/home/julian/vserver/images/wscore.img,hda1,w root=/dev/hda1 ip=192.168.1.3 vif="ip=192.168.1.3"'

This is what tcpdump says:
13:01:02.865864 arp who-has julian.chaosbringer.de tell vm01.chaosbringer.de
13:01:02.865916 arp reply julian.chaosbringer.de is-at fe:ff:ff:ff:ff:ff
13:01:02.867407 IP vm01.chaosbringer.de.2887 > julian.chaosbringer.de.telnet: S 984924181:984924181(0) win 5840 <mss 1460,sackOK,timestamp 4294944213 0,nop,wscale 2> 13:01:02.867517 IP julian.chaosbringer.de.telnet > vm01.chaosbringer.de.2887: S 1048558836:1048558836(0) ack 984924182 win 5792 <mss 1460,sackOK,timestamp 91427 4294944213,nop,wscale 2> 13:01:02.868926 IP vm01.chaosbringer.de.2887 > julian.chaosbringer.de.telnet: . ack 1 win 1460 <nop,nop,timestamp 4294944214 91427> 13:01:02.875470 IP vm01.chaosbringer.de.2887 > julian.chaosbringer.de.telnet: P 1:25(24) ack 1 win 1460 <nop,nop,timestamp 4294944215 91427> 13:01:02.875541 IP julian.chaosbringer.de.telnet > vm01.chaosbringer.de.2887: . ack 25 win 1448 <nop,nop,timestamp 91428 4294944215> 13:01:03.008423 IP julian.chaosbringer.de.telnet > vm01.chaosbringer.de.2887: P 1:13(12) ack 25 win 1448 <nop,nop,timestamp 91441 4294944215> 13:01:03.213839 IP julian.chaosbringer.de.telnet > vm01.chaosbringer.de.2887: P 1:13(12) ack 25 win 1448 <nop,nop,timestamp 91462 4294944215> 13:01:03.635150 IP julian.chaosbringer.de.telnet > vm01.chaosbringer.de.2887: P 1:13(12) ack 25 win 1448 <nop,nop,timestamp 91504 4294944215> 13:01:04.475171 IP julian.chaosbringer.de.telnet > vm01.chaosbringer.de.2887: P 1:13(12) ack 25 win 1448 <nop,nop,timestamp 91588 4294944215> 13:01:06.155190 IP julian.chaosbringer.de.telnet > vm01.chaosbringer.de.2887: P 1:13(12) ack 25 win 1448 <nop,nop,timestamp 91756 4294944215> 13:01:09.515223 IP julian.chaosbringer.de.telnet > vm01.chaosbringer.de.2887: P 1:13(12) ack 25 win 1448 <nop,nop,timestamp 92092 4294944215>
.
.
.
What does that mean? julian.chaosbringer.de tries to get a 'syn' from vm01, but gets not reply?

routingtable of dom0:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface vm01.chaosbring * 255.255.255.255 UH 0 0 0 vif2.0
192.168.1.0     *               255.255.255.0   U     0      0        0 eth0
default         .               0.0.0.0         UG    0      0        0 eth0

routingtable of domU:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.1.0     *               255.255.255.0   U     0      0        0 eth0

xend-config.sxp looks like ( i removed the comments ):
(xend-relocation-server yes)
(xend-relocation-hosts-allow '^localhost$')
(network-script network-route)
(vif-script     vif-route)
(dom0-min-mem 196)
(dom0-cpus 0)

Thanks,
Julian

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