A zone can be configured so that the zone's IP address becomes part of an IP Network Multipathing (IPMP) group. The configuration process is documented in How to Extend IP Network Multipathing Functionality to Shared-IP Non-Global Zones in System Administration Guide: Solaris Containers-Resource Management and Solaris Zones.
If all the network interfaces in the IPMP group fail, a zone does not boot if it has an IP address that is part of the IPMP group.
The following example illustrates the result if you attempt to boot the zone.
# zoneadm -z my-zone boot zoneadm: zone 'my-zone': bge0:1: could not set default interface for multicast: Invalid argument zoneadm: zone 'my-zone': call to zoneadmd failed
Workaround: Repair at least one network interface in the group.