I wonder if this is related to Bug 6675887? "No External Network Connectivity on Virtual Switch Services Bound to an Aggregated Device
If a link aggregation device is being used as the physical device for a virtual switch (vswitch), the vswitch might not be able to open and configure the device. As a result, the client guest domains cannot send and receive network packets to and from the physical network. Workaround: Add the following line to the /etc/system file on the domain with the vswitch, and reboot the domain. set vsw:vsw_mac_open_retries = 1200 " Although I'm not using an aggregated device (anymore), the symptoms sound the same. -- This message was posted from opensolaris.org
