L2IOU and L2IOL images supporting L2 port-security, L2 Etherchannels and Layer 1 message exchanges can be copied from /auto/autons/iou/layer-2/
Linux images:
i86bi_linux_l2-upk9-ms.june20_2012_golden_spike
i86bi_linux-p-ms.june20_2012_golden_spike
Solaris images:
unixl2-upk9-ms.june20_2012_golden_spike
unix-p-ms.june20_2012_golden_spike
All 3 EtherChannel modes are working in L2IOU.
Be aware that to get the full functionality of L2 Etherchannels, one must enable Layer 1 message exchanges.
By default the Layer 1 support is disabled. To enable Layer 1 support, include «-l» (lowercase L) on the command line.
Regards.