[Pkg-xen-devel] network-bridge called three times

Alex Volkov avolkov at gmail.com
Sun May 4 01:44:13 UTC 2008 

Hello All,
I'm trying to figure out why xen-utils-common 3.2 doesn't suport
bridging on multiple interfaces. I've been digging
around /etc/xen/scripts/network-bridges. And modified it so that during
boot, when executed the script writes into /tmp/netbr file, but I
commented out code that actually creates bridges.

I discovered that this script is called three times during boot, I
checked all files under /etc/xen and the only place that mentions
(network-script network-bridge) is  in /etc/xen/xend-config.sxp, and it
is mentioned there once.

Is this normal behaviour or is something wrong?

I attached both my modified script and output logfile, note that my
computer has two network interfaces - eth0 and eth1

Alex.
-------------- next part --------------
Sat May  3 21:34:34 EDT 2008
Network bridge values: 'start' 
*****IP link parameters before script import
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:80:2d:8f:cf:de brd ff:ff:ff:ff:ff:ff
    inet 172.16.200.22/24 brd 172.16.200.255 scope global eth0
    inet6 fe80::280:2dff:fe8f:cfde/64 scope link 
       valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:80:2d:8f:d2:d3 brd ff:ff:ff:ff:ff:ff
    inet 172.16.200.23/24 brd 172.16.200.255 scope global eth1
    inet6 fe80::280:2dff:fe8f:d2d3/64 scope link 
       valid_lft forever preferred_lft forever
4: sit0: <NOARP> mtu 1480 qdisc noop 
    link/sit 0.0.0.0 brd 0.0.0.0
*****IP link parameters after script import
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:80:2d:8f:cf:de brd ff:ff:ff:ff:ff:ff
    inet 172.16.200.22/24 brd 172.16.200.255 scope global eth0
    inet6 fe80::280:2dff:fe8f:cfde/64 scope link 
       valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:80:2d:8f:d2:d3 brd ff:ff:ff:ff:ff:ff
    inet 172.16.200.23/24 brd 172.16.200.255 scope global eth1
    inet6 fe80::280:2dff:fe8f:d2d3/64 scope link 
       valid_lft forever preferred_lft forever
4: sit0: <NOARP> mtu 1480 qdisc noop 
    link/sit 0.0.0.0 brd 0.0.0.0
Device list= -eth1
eth0-
netdev ^eth1^
netdev ^eth0^
Sat May  3 21:34:34 EDT 2008
Network bridge values: 'start' 
*****IP link parameters before script import
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:80:2d:8f:cf:de brd ff:ff:ff:ff:ff:ff
    inet 172.16.200.22/24 brd 172.16.200.255 scope global eth0
    inet6 fe80::280:2dff:fe8f:cfde/64 scope link 
       valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:80:2d:8f:d2:d3 brd ff:ff:ff:ff:ff:ff
    inet 172.16.200.23/24 brd 172.16.200.255 scope global eth1
    inet6 fe80::280:2dff:fe8f:d2d3/64 scope link 
       valid_lft forever preferred_lft forever
4: sit0: <NOARP> mtu 1480 qdisc noop 
    link/sit 0.0.0.0 brd 0.0.0.0
5: vif0.0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
6: veth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
7: vif0.1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
8: veth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
9: vif0.2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
10: veth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
11: vif0.3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
12: veth3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
*****IP link parameters after script import
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:80:2d:8f:cf:de brd ff:ff:ff:ff:ff:ff
    inet 172.16.200.22/24 brd 172.16.200.255 scope global eth0
    inet6 fe80::280:2dff:fe8f:cfde/64 scope link 
       valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:80:2d:8f:d2:d3 brd ff:ff:ff:ff:ff:ff
    inet 172.16.200.23/24 brd 172.16.200.255 scope global eth1
    inet6 fe80::280:2dff:fe8f:d2d3/64 scope link 
       valid_lft forever preferred_lft forever
4: sit0: <NOARP> mtu 1480 qdisc noop 
    link/sit 0.0.0.0 brd 0.0.0.0
5: vif0.0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
6: veth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
7: vif0.1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
8: veth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
9: vif0.2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
10: veth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
11: vif0.3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
12: veth3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
Device list= -eth1
eth0-
netdev ^eth1^
netdev ^eth0^
Sat May  3 21:34:37 EDT 2008
Network bridge values: 'start' 
*****IP link parameters before script import
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:80:2d:8f:cf:de brd ff:ff:ff:ff:ff:ff
    inet 172.16.200.22/24 brd 172.16.200.255 scope global eth0
    inet6 fe80::280:2dff:fe8f:cfde/64 scope link 
       valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:80:2d:8f:d2:d3 brd ff:ff:ff:ff:ff:ff
    inet 172.16.200.23/24 brd 172.16.200.255 scope global eth1
    inet6 fe80::280:2dff:fe8f:d2d3/64 scope link 
       valid_lft forever preferred_lft forever
4: sit0: <NOARP> mtu 1480 qdisc noop 
    link/sit 0.0.0.0 brd 0.0.0.0
5: vif0.0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
6: veth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
7: vif0.1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
8: veth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
9: vif0.2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
10: veth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
11: vif0.3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
12: veth3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
*****IP link parameters after script import
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:80:2d:8f:cf:de brd ff:ff:ff:ff:ff:ff
    inet 172.16.200.22/24 brd 172.16.200.255 scope global eth0
    inet6 fe80::280:2dff:fe8f:cfde/64 scope link 
       valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:80:2d:8f:d2:d3 brd ff:ff:ff:ff:ff:ff
    inet 172.16.200.23/24 brd 172.16.200.255 scope global eth1
    inet6 fe80::280:2dff:fe8f:d2d3/64 scope link 
       valid_lft forever preferred_lft forever
4: sit0: <NOARP> mtu 1480 qdisc noop 
    link/sit 0.0.0.0 brd 0.0.0.0
5: vif0.0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
6: veth0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
7: vif0.1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
8: veth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
9: vif0.2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
10: veth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
11: vif0.3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
12: veth3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop 
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
Device list= -eth1
eth0-
netdev ^eth1^
netdev ^eth0^
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