tap+bridge -> ethernet with an alias ...

[Marc G. Fournier]

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On my desktop here, I have a qemu-img of Win XP that is using bridging to 
connect to the Internet ... everything works great, even have remote desktop 
working so that I can login from another windows box into the VM ... and very 
responsive ...

... but this is on a private network where the ethernet doesn't have any 
aliases attached to it ...

I've tried uploading the image (after changing the IP) to one of my servers 
with a public interface on it, but now can't seem to get networking working ...

my ifconfig -a looks like:

bge0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 
1500
        options=98<VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM>
        ether 00:14:c2:3f:2e:86
        inet xxx.xxx.xxx.xxx netmask 0xffffff00 broadcast xxx.xxx.xxx.255
        inet 192.168.1.1 netmask 0xffffff00 broadcast 192.168.1.255
        inet xxx.xxx.xxx.xxx netmask 0xffffffff broadcast xxx.xxx.xxx.xxx
        media: Ethernet 100baseTX <full-duplex>
        status: active
bge1: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=9b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM>
        ether 00:14:c2:3f:2e:85
        media: Ethernet autoselect (none)
        status: no carrier
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
        inet 127.0.0.1 netmask 0xff000000
bridge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        ether ce:44:c7:1b:47:40
        id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15
        maxage 20 holdcnt 6 proto rstp maxaddr 100 timeout 1200
        root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0
        member: bge0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
                ifmaxaddr 0 port 1 priority 128 path cost 200000
        member: tap0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
                ifmaxaddr 0 port 5 priority 128 path cost 2000000
tap0: flags=8942<BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
        ether 00:bd:96:ae:67:00

the 192.168.1.x is used for 'internal routing' ...

when I startup qemu, I use:

     qemu winxp.img -net nic -net tap -vnc :1

and I can connect via VNC, but the IP assigned to the image isn't pingable, 
like it is on my desktop ...

Is there something with 'pre-aliased' interfaces that can't be used with a 
bridge/tap device?  Or have I just missed something?


- -- 
Marc G. Fournier        Hub.Org Hosting Solutions S.A. (http://www.hub.org)
Email . scrappy at hub.org                              MSN . scrappy at hub.org
Yahoo . yscrappy               Skype: hub.org        ICQ . 7615664
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