Hi all. On ubuntu 10.04, contrary to what is posted on <a href=https://help.ubuntu.com/community/UbuntuBonding>https://help.ubuntu.com/community/UbuntuBonding</a> , my bond refuses to come up after reboot if I don't at least create the <tt>/etc/modprobe.d/bonding.conf</tt> file with one line in it: <tt>alias bond0 bonding </tt> <tt>My /etc/network/interfaces looks as follows:</tt> <tt># The primary network interface</tt> <tt>#auto eth0</tt> <tt>#iface eth0 inet dhcp</tt> <tt>###Adapter bonding for eth0 and eth1</tt> <tt>auto bond0</tt> <tt>iface bond0 inet static</tt> <tt>address 172.16.1.11</tt> <tt>netmask 255.255.0.0</tt> <tt>gateway 172.16.1.1</tt> <tt>dns-nameservers 172.16.1.2</tt> <tt>post-up ifenslave bond0 eth0 eth1</tt> <tt>pre-down ifenslave -d bond0 eth0 eth1</tt> <tt>bond_mode 4 #802.3ad</tt> <tt>bond_miimon 100</tt> <tt>bond_lacp_rate 1</tt> I tried both bond-mode 4 and bond_mode 802.3ad , but as you can see underneath, it's always round-robin: root@VLET1:~# cat /proc/net/bonding/bond0 Ethernet Channel Bonding Driver: v3.5.0 (November 4, 2008) Bonding Mode: load balancing (round-robin) MII Status: up MII Polling Interval (ms): 0 Up Delay (ms): 0 Down Delay (ms): 0 Slave Interface: eth0 MII Status: up Link Failure Count: 0 Permanent HW addr: 00:15:17:31:3d:ac Slave Interface: eth1 MII Status: up Link Failure Count: 0 Permanent HW addr: 00:15:17:31:3d:ad What am I doing something wrong? Met vriendelijke groeten/Kind regards/Meilleures salutations, Jürgen Depicker