Hello My aim is to have a VM with 2 network interfaces, one bridged to the outside world and the other bridged on a private network. From the private interface this VM runs DHCP and PXE services to start and install VM's which have one network interface tapped on the private bridge.
All machines are centos or ubuntu guests. I confirm that simply starting a linux guest that used the private bridge to get a dhcp address works fine. However, using a pxe capable boot rom, dhcp fails. I have confirmed the dhcp request and offer appear on both tap interfaces and the intervening bridge interface. I also confirm that the pxe capable boot rom works if its using the bridge to the external network. I have tried all the pxe boot roms available with the exact same result. This could be a networking configuration problem or perhaps a bug somewhere in the nic emulation or boot rom. Any ideas for further diagnostics or solutions appreciated. More config information below. Thanks Stephen kvm -no-reboot -m 1000 -boot c \ -hda ux-head.img \ -net nic,vlan=0,macaddr=DE:AD:BE:EF:7d:e4 -net tap,vlan=0,ifname=tap0 \ -net nic,vlan=1,macaddr=DE:AD:BE:EF:7d:e5 -net tap,vlan=1,ifname=tap1 kvm -no-reboot -m 1000 -boot n \ -hda ux-node-1.img \ -net nic,vlan=1,macaddr=DE:AD:BE:EF:7d:e6,model=ne2k_pci \ -net tap,vlan=1,ifname=tap2 QEMU PC emulator version 0.9.1 (kvm-62), Copyright (c) 2003-2008 Fabrice Bellard On Ubuntu 8.04 Linux x2 2.6.24-19-generic #1 SMP Wed Aug 20 17:53:40 UTC 2008 x86_64 GNU/Linux br0 Link encap:Ethernet HWaddr 00:22:15:1e:7d:e4 inet addr:172.16.198.251 Bcast:172.16.198.255 Mask:255.255.255.0 inet6 addr: fe80::222:15ff:fe1e:7de4/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:61406 errors:0 dropped:0 overruns:0 frame:0 TX packets:373150 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:3677008 (3.5 MB) TX bytes:536494463 (511.6 MB) br1 Link encap:Ethernet HWaddr 00:ff:1e:0d:da:5d inet6 addr: fe80::2ff:1eff:fe0d:da5d/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:110 errors:0 dropped:0 overruns:0 frame:0 TX packets:493 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:27599 (26.9 KB) TX bytes:119935 (117.1 KB) br1:avahi Link encap:Ethernet HWaddr 00:ff:1e:0d:da:5d inet addr:169.254.6.156 Bcast:169.254.255.255 Mask:255.255.0.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 eth0 Link encap:Ethernet HWaddr 00:22:15:1e:7d:e4 inet6 addr: fe80::222:15ff:fe1e:7de4/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:61512 errors:0 dropped:0 overruns:0 frame:0 TX packets:373396 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:4803323 (4.5 MB) TX bytes:538013422 (513.0 MB) Interrupt:16 eth1 Link encap:Ethernet HWaddr 00:22:15:1e:7e:d4 UP BROADCAST 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:17 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:39299 errors:0 dropped:0 overruns:0 frame:0 TX packets:39299 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:512377716 (488.6 MB) TX bytes:512377716 (488.6 MB) tap0 Link encap:Ethernet HWaddr 00:ff:82:b4:0a:dc inet6 addr: fe80::2ff:82ff:feb4:adc/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:249 errors:0 dropped:0 overruns:0 frame:0 TX packets:223 errors:0 dropped:289 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:23823 (23.2 KB) TX bytes:33914 (33.1 KB) tap1 Link encap:Ethernet HWaddr 00:ff:77:d3:db:4b inet6 addr: fe80::2ff:77ff:fed3:db4b/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:90 errors:0 dropped:0 overruns:0 frame:0 TX packets:80 errors:0 dropped:436 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:17339 (16.9 KB) TX bytes:23032 (22.4 KB) tap2 Link encap:Ethernet HWaddr 00:ff:96:5e:22:0f inet6 addr: fe80::2ff:96ff:fe5e:220f/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:20 errors:0 dropped:0 overruns:0 frame:0 TX packets:88 errors:0 dropped:498 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:11800 (11.5 KB) TX bytes:18657 (18.2 KB) tap3 Link encap:Ethernet HWaddr 00:ff:1e:0d:da:5d inet6 addr: fe80::2ff:1eff:fe0d:da5d/64 Scope:Link 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:606 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) tap4 Link encap:Ethernet HWaddr 00:ff:6b:29:40:c8 inet6 addr: fe80::2ff:6bff:fe29:40c8/64 Scope:Link 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:606 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) tap5 Link encap:Ethernet HWaddr 00:ff:83:d9:3d:11 inet6 addr: fe80::2ff:83ff:fed9:3d11/64 Scope:Link 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:606 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) vnet0 Link encap:Ethernet HWaddr ce:89:a9:0a:f1:c3 inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0 inet6 addr: fe80::cc89:a9ff:fe0a:f1c3/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:66 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 B) TX bytes:7454 (7.2 KB) -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html