[Xen-users] xen network problen domU

[박은병 <peb1611@xxxxxxxxx>]

I've just installed ubuntu 9.10 karmic server i386 on my mac mini machine

xen 3.4.2, dom0 is Jeremy's pvops kernel 2.6.31.6 and domU is vanila kernel 2.6.32.

dom0 and domU are ubuntu 9.10 server distribution rootfile system.

 

The dom0 can connect internet. but DomU has no network connections.

 

I've tried to ping, arping, tcpdump

 

ping from domU to dom0

 

# ping 147.46.125.xx
PING 147.46.125.xx (147.46.125.xx) 56(84) bytes of data.
^C
--- 147.46.125.xx ping statistics ---
2 packets transmitted, 0 received, 100% packet loss, time 1007ms

 

at the same time, tcpdump on dom0 show up the ICMP request by domU

 

# arping 147.46.125.xx (from domU to dom0)
ARPING 147.46.125.xx from 192.168.1.101 eth0
Unicast reply from 147.46.125.xx [00:16:CB:A5:DD:66]  0.646ms
Unicast reply from 147.46.125.xx [00:16:CB:A5:DD:66]  0.583ms
Unicast reply from 147.46.125.xx [00:16:CB:A5:DD:66]  0.589ms
Unicast reply from 147.46.125.xx [00:16:CB:A5:DD:66]  0.583ms
Unicast reply from 147.46.125.xx [00:16:CB:A5:DD:66]  0.581ms
Unicast reply from 147.46.125.xx [00:16:CB:A5:DD:66]  0.581ms
Unicast reply from 147.46.125.xx [00:16:CB:A5:DD:66]  0.586ms

 

at the same time, tcpdump on dom0 show up the ARP request by domU

 

#ping from dom0 to domU

# ping 192.168.101.1
PING 192.168.101.1 (192.168.101.1) 56(84) bytes of data.
^C
--- 192.168.101.1 ping statistics ---
4 packets transmitted, 0 received, 100% packet loss, time 3022ms

 

but ping cannot get the response from dom0 to domU, vice versa as well.

 

what is the problem??

 

#ifconfig -a (dom0)

eth0      Link encap:Ethernet  HWaddr 00:16:cb:a5:dd:66 
          inet addr:147.46.125.xx Bcast:147.46.125.255  Mask:255.255.255.0
          inet6 addr: fe80::216:cbff:fea5:dd66/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:61737 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1024 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:5299205 (5.2 MB)  TX bytes:252992 (252.9 KB)

lo        Link encap:Local Loopback 
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

peth0     Link encap:Ethernet  HWaddr 00:16:cb:a5:dd:66 
          inet6 addr: fe80::216:cbff:fea5:dd66/64 Scope:Link
          UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
          RX packets:64736 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1079 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:6453075 (6.4 MB)  TX bytes:257494 (257.4 KB)
          Interrupt:16

vif1.0    Link encap:Ethernet  HWaddr fe:ff:ff:ff:ff:ff 
          inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
          UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
          RX packets:36 errors:0 dropped:0 overruns:0 frame:0
          TX packets:62408 errors:0 dropped:240 overruns:0 carrier:0
          collisions:0 txqueuelen:32
          RX bytes:2602 (2.6 KB)  TX bytes:6237639 (6.2 MB)

wlan0     Link encap:Ethernet  HWaddr 00:14:51:ed:fa:c3 
          BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

wmaster0  Link encap:UNSPEC  HWaddr 00-14-51-ED-FA-C3-00-00-00-00-00-00-00-00-00-00 
          [NO FLAGS]  MTU:0  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

 

# ifconfig -a (domU)

eth0      Link encap:Ethernet  HWaddr 00:16:3e:1f:4f:46 
          inet addr:192.168.1.101  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::216:3eff:fe1f:4f46/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:77419 errors:0 dropped:0 overruns:0 frame:0
          TX packets:59 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:6665565 (6.6 MB)  TX bytes:4439 (4.4 KB)
          Interrupt:10

lo        Link encap:Local Loopback 
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:2 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:168 (168.0 B)  TX bytes:168 (168.0 B)

 

and my domU configuration file

 

      kernel = "/boot/vmlinuz-2.6.32-domU"
      ramdisk = "/boot/initrd.img-2.6.32-domU"
      memory = 512
      name = "ubuntu1"
      vif = [ 'bridge=eth0' ]
      ip = "192.168.0.101"
      netmask= "255.255.255.0"
      gateway = "192.168.0.1"
      disk =[ 'file:/root/xen/domainU/ubuntu1/ubuntu1.img,xvda1,w',
      'file:/root/xen/domainU/ub      untu1/ubuntu1_swap.img,xvda2,w' ]
      hostname= "ubuntu1"
      root = "/dev/xvda1 ro"extra = "console=hvc0 earlyprintk=xen"

I can found similar problem on internet, but I don't understand why does hoster's bridged setup is problematic.

http://www.howtoforge.com/forums/showthread.php?t=39923

 

Is there anyone who has any other solution??

 

 

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