Dear Centos-Virt: This is actually a second request for help on the same issue. I finally got to try what several months ago was replayed to me and no joy was to be had. I am afraid the original thread got stale and also had extra, unnecessary data in it. Guest=XP Pro, SP2 Host=CentOS5; # uname -r; 2.6.18-8.1.15.el5 VirtualBox-1.5.0_24069_rhel5-2.i586.rpm http://www.virtualbox.org/download/1.5.0/VirtualBox-1.5.0_24069_rhel5-1.i586.rpm.run I have two nic: eth0 is the internal network; eth1 connects to a DSL modem. I also have a fully functioning DHCP server on eth0 (works perfectly with Parallels for Linux). The directions (from hell): http://www.virtualbox.org/download/UserManual.pdf I am trying to set up a "host interface" network between my XP guest and my Linux host (eth0). I do believe I don't have a clue as to how to set up a bridge on eth0. Here is what I have so far: ~~~~~~~~~~~~~~~~~ ifcfg-br0: DEVICE=br0 TYPE=Bridge BOOTPROTO=static BROADCAST=192.168.255.255 IPADDR=192.168.255.10 NETMASK=255.255.255.0 NETWORK=192.168.255.0 GATEWAY=192.168.255.10 ONBOOT=yes USERCTL=yes IPV6INIT=no PEERDNS=no ~~~~~~~~~~~~~~~~~ ifcfg-eth0: DEVICE=eth0 TYPE=Ethernet BOOTPROTO=static BROADCAST=192.168.255.255 IPADDR=192.168.255.12 NETMASK=255.255.255.0 NETWORK=192.168.255.0 GATEWAY=192.168.255.10 ONBOOT=yes USERCTL=yes IPV6INIT=no PEERDNS=no BRIDGE=br0 ~~~~~~~~~~~~~~~~~ ifcfg-vbox0: DEVICE=vbox0 TYPE=Ethernet BOOTPROTO=static BROADCAST=192.168.255.255 IPADDR=192.168.255.14 NETMASK=255.255.255.0 NETWORK=192.168.255.0 GATEWAY=192.168.255.10 ONBOOT=yes USERCTL=yes IPV6INIT=no PEERDNS=no BRIDGE=br0 When I fire up Virtual Box, my DCHP server offers it an IP, but I do not see the RX light flashing on my XP monitor icon in the far right of the status bar. VB doesn't get an IP. If I configure the VB NIC with a static address (I tried 192.168.255.20), again no receive light and the network won't work. Also, I have to "ifdown eth1" and "ifup eth1" to get the "G" (gateway) to show up on "netstat -rn". Otherwise, no surfing the net with Firefox (Linux version). Weird. I am so very confused. Can someone tell me what I am doing wrong? Many thanks, -T