Hi, I have a fc14 box with two interfaces that I'm having some difficulty setting up a bridge properly. I have a few kvm guests set up and running, but I've switched from using NetworkManager to using standard networking with a bridge. I've modified the ifcfg-eth0 and created ifcfg-br0 as per the standard documentation, but I think I'm having routing problems. This is what the network looks like: [root@fc14 ~]# route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 68.195.XXX.40 * 255.255.255.248 U 0 0 0 br0 192.168.1.0 * 255.255.255.0 U 0 0 0 eth1 192.168.125.0 * 255.255.255.0 U 0 0 0 virbr0 link-local * 255.255.0.0 U 1003 0 0 eth1 link-local * 255.255.0.0 U 1004 0 0 br0 default ool-44c3c129.st 0.0.0.0 UG 0 0 0 br0 br0 Link encap:Ethernet HWaddr 40:61:86:4E:84:09 inet addr:68.195.XXX.42 Bcast:68.195.XXX.47 Mask:255.255.255.248 inet6 addr: fe80::a0e7:ecff:fefd:340a/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:3883 errors:0 dropped:0 overruns:0 frame:0 TX packets:3579 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:1818327 (1.7 MiB) TX bytes:590720 (576.8 KiB) eth0 Link encap:Ethernet HWaddr 40:61:86:4E:84:09 inet6 addr: fe80::4261:86ff:fe4e:8409/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:3891 errors:0 dropped:0 overruns:0 frame:0 TX packets:3551 errors:0 dropped:0 overruns:0 carrier:1 collisions:0 txqueuelen:1000 RX bytes:1873169 (1.7 MiB) TX bytes:588302 (574.5 KiB) Interrupt:42 eth1 Link encap:Ethernet HWaddr 00:0E:0C:3B:36:F4 inet addr:192.168.1.1 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::20e:cff:fe3b:36f4/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:7622 errors:0 dropped:0 overruns:0 frame:0 TX packets:6936 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1062687 (1.0 MiB) TX bytes:4304984 (4.1 MiB) virbr0 Link encap:Ethernet HWaddr E6:ED:D2:6E:58:5C inet addr:192.168.125.1 Bcast:192.168.125.255 Mask:255.255.255.0 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:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) vnet0 Link encap:Ethernet HWaddr FE:54:00:67:2C:4C inet6 addr: fe80::fc54:ff:fe67:2c4c/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:5 errors:0 dropped:0 overruns:0 frame:0 TX packets:391 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:300 (300.0 b) TX bytes:23358 (22.8 KiB) I've left out the loopback for simplicity. The problem is that I can't reach the br0 device from a server on the eth1 device (the 192.168. network). Is this a routing issue? Should I also add the eth1 device to the bridge? If so, how would I do that? Also, can you explain under what circumstances a tun device would be used? Does that have any relation to bridging? Thanks, Alex