Fresh install of Ubuntu 12.04 LTS with libvert/KVM installed. I have 2 virtual machines that I need need to be on the same LAN as the host. The host has two physical interfaces eth0 and eth1. eth1 is not in use. I would like eth0 to have a static assigned IP and act as a bridge for my VM's.
Prior to setting up the bridge my /etc/network/interfaces looks like:
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
auto eth0
iface eth0 inet static
address 10.0.5.5
netmask 255.255.255.0
gateway 10.0.5.254
dns-nameservers 10.0.5.1
Everything works as expected under this configuration. However, When I apply the below captioned configuration:
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
auto br0
iface br0 inet static
address 10.0.5.5
netmask 255.255.255.0
gateway 10.0.5.254
dns-nameservers 10.0.5.1
bridge_ports eth0
bridge_stp off
bridge_maxwait 0
bridge_fd 0
Under this configuration I can ping internal hosts by IP and name. Name resolution works as expected. Attempting to ping an external hosts yields "No route to host."
Here is ifconfig -a after the bridge configuration is applied.
br0 Link encap:Ethernet HWaddr 00:25:90:da:29:8f
inet addr:10.0.5.5 Bcast:10.0.5.255 Mask:255.255.255.0
inet6 addr: fe80::225:90ff:feda:298f/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:11569 errors:0 dropped:0 overruns:0 frame:0
TX packets:586 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1433248 (1.4 MB) TX bytes:63079 (63.0 KB)
eth0 Link encap:Ethernet HWaddr 00:25:90:da:29:8f
inet addr:10.0.5.107 Bcast:10.0.5.255 Mask:255.255.255.0
inet6 addr: fe80::225:90ff:feda:298f/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:13632 errors:0 dropped:122 overruns:0 frame:0
TX packets:1240 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2008747 (2.0 MB) TX bytes:119540 (119.5 KB)
Interrupt:20 Memory:dfa00000-dfa20000
eth1 Link encap:Ethernet HWaddr 00:25:90:da:29:8e
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:16 Memory:df900000-df920000
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:65536 Metric:1
RX packets:745 errors:0 dropped:0 overruns:0 frame:0
TX packets:745 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:66095 (66.0 KB) TX bytes:66095 (66.0 KB)
virbr0 Link encap:Ethernet HWaddr c2:dd:f8:44:eb:2d
inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0
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:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Ultimately, I want eth0 to have static 10.0.5.5 and put both of my VM's on this interface with statically assigned 10.0.5.6-7. What is wrong with my configuration?
ip route ls
? – Mark Wagner Jan 28 '14 at 19:38default via 10.0.5.254 dev eth0 proto static default via 10.0.5.254 dev br0 metric 100 10.0.5.0/24 dev br0 proto kernel scope link src 10.0.5.5 10.0.5.0/24 dev eth0 proto kernel scope link src 10.0.5.107 metric 1 169.254.0.0/16 dev br0 scope link metric 1000 192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1
– sardean Jan 28 '14 at 19:44