I'm trying to get an ARM QEMU system out on my LAN. I tried running QEMU directly from Windows (Windows 7 x64), with success except I could not get a TAP adapter to bridge to my wireless connection. Specifically, Windows refused to bridge any of my network adapters.
So, I tried using QEMU within a Ubuntu virtual machine (which, surprisingly, turns out to be quite a bit faster, which is why I'd like to stick with it). The Ubuntu VM is bridged to my wireless connection, and works fine. I've setup a bridge within Ubuntu using a TAP device, and I believe it is setup correctly, but save for getting a DHCP address from my LAN, it won't work.
- Windows 7 x64 Host
- Ubuntu 12.04 32-bit VM
- QEMU ARM running Debian Squeeze
- Ubuntu 12.04 32-bit VM
I believe there is a routing problem, but I cannot pinpoint it.
- My LAN is setup for DHCP at 18.104.22.168/24, and the gateway is 22.214.171.124 (yes, this is dumb but it is not the issue)
- Ubuntu has the following configuration:
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br0 Link encap:Ethernet HWaddr 08:00:27:74:6b:ec inet addr:126.96.36.199 Bcast:188.8.131.52 Mask:255.255.255.0 inet6 addr: fe80::a00:27ff:fe74:6bec/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:3135 errors:0 dropped:0 overruns:0 frame:0 TX packets:967 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:681918 (681.9 KB) TX bytes:79747 (79.7 KB) eth1 Link encap:Ethernet HWaddr 08:00:27:74:6b:ec inet6 addr: fe80::a00:27ff:fe74:6bec/64 Scope:Link UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1 RX packets:14249 errors:0 dropped:0 overruns:0 frame:0 TX packets:5850 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:15166414 (15.1 MB) TX bytes:431255 (431.2 KB) tap1 Link encap:Ethernet HWaddr 96:f3:2d:ae:c8:08 inet6 addr: fe80::94f3:2dff:feae:c808/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:161 errors:0 dropped:0 overruns:0 frame:0 TX packets:2262 errors:0 dropped:3 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:12144 (12.1 KB) TX bytes:262799 (262.7 KB)
QEMU is as follows:
And my server confirms it:
tail /var/log/dnsmasq.leases 1341855255 52:54:00:12:34:56 184.108.40.206 * *
So QEMU is getting an IP address, but otherwise seems not connected:
root@arm-emu:~# ping google.com ping: unknown host google.com root@arm-emu:~# ping 220.127.116.11 From 18.104.22.168 Destination Host Unreachable
This is what I used to setup the bridge--in Ubuntu:
tunctl -t tap1 -u root brctl addbr br0 ifconfig eth1 0.0.0.0 promisc brctl addif br0 eth1 dhclient br0 brctl addif br0 tap1 ifconfig tap1 up
In QEMU, I am just using DHCP for eth0, no special configuration.
Am I doing this wrong, what with my bridged bridge connection?