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[Xen-bugs] [Bug 431] Starting Xen disconnects machine from network

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To: xen-bugs@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-bugs] [Bug 431] Starting Xen disconnects machine from network
From: bugzilla-daemon@xxxxxxxxxxxxxxxxxxx
Date: Tue, 06 Dec 2005 06:32:35 +0000
Delivery-date: Tue, 06 Dec 2005 06:32:47 +0000
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http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=431





------- Additional Comments From jacquesb@xxxxxxxxx  2005-12-06 06:32 -------
Here is a screen log of what is happening, plus the output from the requested
commands:

host:~# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:11:25:8E:7B:40  
          inet addr:10.43.234.101  Bcast:10.255.255.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:37 errors:0 dropped:0 overruns:0 frame:0
          TX packets:29 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:3052 (2.9 KiB)  TX bytes:2288 (2.2 KiB)
          Interrupt:16 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:8 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:560 (560.0 b)  TX bytes:560 (560.0 b)

host:~# 
host:~# ping 10.43.234.1
PING 10.43.234.1 (10.43.234.1) 56(84) bytes of data.
64 bytes from 10.43.234.1: icmp_seq=1 ttl=255 time=0.260 ms
64 bytes from 10.43.234.1: icmp_seq=2 ttl=255 time=0.226 ms
64 bytes from 10.43.234.1: icmp_seq=3 ttl=255 time=0.246 ms

--- 10.43.234.1 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1998ms
rtt min/avg/max/mdev = 0.226/0.244/0.260/0.013 ms
host:~# sh -x /etc/xen/scripts/network-bridge start
++ dirname /etc/xen/scripts/network-bridge
+ dir=/etc/xen/scripts
+ . /etc/xen/scripts/xen-script-common.sh
++ set -e
+ . /etc/xen/scripts/xen-network-common.sh
++ '[' -e /etc/SuSE-release ']'
++ which ifup
+ findCommand start
+ expr index start =
+ command=start
+ return
+ evalVariables start
+ expr index start = '>' 1
+ vifnum=0
+ bridge=xenbr0
+ netdev=eth0
+ antispoof=no
+ pdev=peth0
+ vdev=veth0
+ vif0=vif0.0
+ op_start
+ '[' xenbr0 == null ']'
+ link_exists veth0
+ ip link show veth0
+ return 0
+ create_bridge xenbr0
+ local bridge=xenbr0
+ brctl show
+ grep -q xenbr0
+ brctl addbr xenbr0
+ brctl stp xenbr0 off
+ brctl setfd xenbr0 0
+ ip link set xenbr0 up
+ link_exists veth0
+ ip link show veth0
+ return 0
++ ip link show eth0
++ grep 'link\/ether'
++ sed -e 's/.*ether \(..:..:..:..:..:..\).*/\1/'
+ mac=00:11:25:8e:7b:40
+ preiftransfer eth0
+ true
+ transfer_addrs eth0 veth0
+ local src=eth0
+ local dst=veth0
+ ip addr show dev veth0
+ egrep -q '^ *inet '
+ ip addr show dev eth0
+ egrep '^ *inet '
+ sed -e '
s/inet/ip addr add/
s@\([0-9]\+\.[0-9]\+\.[0-9]\+\.[0-9]\+/[0-9]\+\)@\1@
s/eth0/dev veth0/
'
+ sh -e
+ ip route list
+ sed -ne '
/dev veth0\( \|$\)/ {
  s/^/ip route del /
  p
}'
+ sh -e
+ ifdown eth0
+ ip link set eth0 name peth0
+ ip link set veth0 name eth0
+ ip link set peth0 down arp off
+ ip link set peth0 addr fe:ff:ff:ff:ff:ff
+ ip addr flush peth0
+ ip link set eth0 addr 00:11:25:8e:7b:40 arp on
+ add_to_bridge xenbr0 vif0.0
+ local bridge=xenbr0
+ local dev=vif0.0
+ brctl show
+ grep -q vif0.0
+ brctl addif xenbr0 vif0.0
+ add_to_bridge xenbr0 peth0
+ local bridge=xenbr0
+ local dev=peth0
+ brctl show
+ grep -q peth0
+ brctl addif xenbr0 peth0
+ ip link set xenbr0 up
+ ip link set vif0.0 up
+ ip link set peth0 up
+ ifup eth0
+ '[' no == yes ']'
host:~# 
host:~# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:11:25:8E:7B:40  
          inet addr:10.43.234.101  Bcast:10.255.255.255  Mask:255.255.255.0
          UP BROADCAST RUNNING 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:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:8 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:560 (560.0 b)  TX bytes:560 (560.0 b)

peth0     Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF  
          UP BROADCAST RUNNING NOARP 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)
          Interrupt:16 

vif0.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF  
          UP BROADCAST RUNNING 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:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

xenbr0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF  
          UP BROADCAST RUNNING 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:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

host:~# ping 10.43.234.1
PING 10.43.234.1 (10.43.234.1) 56(84) bytes of data.
>From 10.43.234.101 icmp_seq=2 Destination Host Unreachable
>From 10.43.234.101 icmp_seq=3 Destination Host Unreachable
>From 10.43.234.101 icmp_seq=4 Destination Host Unreachable

--- 10.43.234.1 ping statistics ---
6 packets transmitted, 0 received, +3 errors, 100% packet loss, time 5009ms
, pipe 3
host:~# 

host:~# brctl show
bridge name     bridge id               STP enabled     interfaces
xenbr0          8000.feffffffffff       no              peth0
                                                        vif0.0
host:~# brctl show br0
bridge name     bridge id               STP enabled     interfaces
xenbr0          8000.feffffffffff       no              peth0
                                                        vif0.0

host:~# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
10.43.234.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
0.0.0.0         10.43.234.1     0.0.0.0         UG    0      0        0 eth0

I hope this input helps, please let me know if you need anything else.

(In reply to comment #4)
> Please post output of the following commands, run as root, from dom0:
> 
> brctl show
> brctl show br0
> ifconfig
> route -n
> 
> Thank you.



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