Bonding can be tricky. I missed the parent request. What I've learned about bonding is that how the module is loaded makes all the difference: # Loading module: # for Red Hat AS4, may work with other 2.6 Linuxes. install bond0 /sbin/modprobe bonding -o bond0 mode=0 miimon=100 # for Red Hat AS3, may work with other 2.4 Linuxes. alias bond0 bonding options bond0 -o bonding mode=0 miimon=100 # For Redhat distributions # ifcfg-ethx DEVICE=ethx USERCTL=no ONBOOT=yes MASTER=bond0 SLAVE=yes BOOTPROTO=none # ifcfg-bond0 DEVICE=bond0 USERCTL=no ONBOOT=yes IPADDR=172.16.48.66 NETMASK=255.255.255.0 GATEWAY=172.16.48.1 http://linux-net.osdl.org/index.php/Bonding -- Neil Watson | Debian Linux System Administrator | Uptime 44 days http://watson-wilson.ca -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster