Added "post-up ip link set dev bond0 up" and that appears to work:
$ ifconfig bond0 bond0 Link encap:Ethernet HWaddr 00:1b:21:d3:f6:0b inet6 addr: fe80::21b:21ff:fed3:f60b/64 Scope:Link UP BROADCAST RUNNING MASTER MULTICAST MTU:1500 Metric:1 RX packets:15 errors:0 dropped:9 overruns:0 frame:0 TX packets:78 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:1486 (1.4 KB) TX bytes:9430 (9.4 KB) # cat /proc/net/bonding/bond0 Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011) Bonding Mode: IEEE 802.3ad Dynamic link aggregation Transmit Hash Policy: layer2 (0) MII Status: up MII Polling Interval (ms): 100 Up Delay (ms): 200 Down Delay (ms): 0 802.3ad info LACP rate: slow Aggregator selection policy (ad_select): stable Active Aggregator Info: Aggregator ID: 2 Number of ports: 2 Actor Key: 17 Partner Key: 24 Partner Mac Address: 00:04:96:18:54:d5 Slave Interface: eth3 MII Status: up Speed: 1000 Mbps Duplex: full Link Failure Count: 0 Permanent HW addr: 00:1b:21:d3:f6:0b Aggregator ID: 2 Slave queue ID: 0 Slave Interface: eth2 MII Status: up Speed: 1000 Mbps Duplex: full Link Failure Count: 0 Permanent HW addr: 00:1b:21:d3:f6:0a Aggregator ID: 2 Slave queue ID: 0 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/889423 Title: 802.3ad bonding not configured correctly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/889423/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs