I’m trying to get networking working between the host os and a guest os so that I can do some kernel mod development and if the kernel crashes on the guest os, at least it won’t be my entire machine.
Here’s where I run my stuff from.
$ l
total 729252
-rw-r--r-- 1 me me 262144 Apr 3 18:44 gentoo-i386.img
-rw-r--r-- 1 me me 4079040 Apr 12 21:56 kernel-2.6.31-gentoo-r6
-rw-r--r-- 1 me me 741791744 Apr 3 19:34 livecd-amd64-installer-2008.0.iso
-rwxrwxr-x 1 me me 283 May 14 21:27 start-kvm.sh./start-kvm.sh looks like
$ cat ./start-kvm.sh
#!/bin/bash
#kvm -hda ./gentoo-i386.img -cdrom ./livecd-amd64-installer-2008.0.iso -boot d
kvm -net nic, macaddr=00:1a:4d:59:ef:04 -net tap, ifname=qtap0, script=no, downscript=no -hda ./gentoo-i386.img -cdrom ./livecd-amd64-installer-2008.0.iso -boot d -m 512
#qemu-system-x86_64 -hda ./gentoo-i386.img -cdrom ./livecd-amd64-installer-2008.0.iso -boot d -m 512 Here’s ifconfig from the host OS …
$ ifconfig
br0 Link encap:Ethernet HWaddr 7e:75:7e:b0:bd:14
inet addr:192.168.1.20 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::f09c:aeff:fe1b:f342/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:52 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:10433 (10.1 KiB)
eth0 Link encap:Ethernet HWaddr 00:1a:4d:59:ef:04
inet addr:192.168.1.11 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::21a:4dff:fe59:ef04/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:6871298 errors:0 dropped:0 overruns:0 frame:0
TX packets:4423297 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1414717071 (1.3 GiB) TX bytes:363443109 (346.6 MiB)
Interrupt:28 Base address:0xe000
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:27 errors:0 dropped:0 overruns:0 frame:0
TX packets:27 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1810 (1.7 KiB) TX bytes:1810 (1.7 KiB)
qtap0 Link encap:Ethernet HWaddr 7e:75:7e:b0:bd:14
inet6 addr: fe80::7c75:7eff:feb0:bd14/64 Scope:Link
UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:27 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)And here’s ifconfig from my guest os after booting it.
# ifconfig
eth0 Link encap:Ethernet HWaddr 00:1A:4D:59:EF:04
inet addr:169.254.167.179 Bcast:169.254.255.255 Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:76 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:17532 (17.1 Kb)
Interrupt:11 Base address:0x6000
lo
... (left out for brevity)Any help much appreciated.