Instead of disabling/enabling just try to restart your 'nwam': # svcadm restart nwam That's what I use when the network interface is suddenly taken down. If it's still not working you will have to disable the nwam permenantly and use regulat dhcp.
The OpenSolaris network connection, especially 'nwam' is not working very well. I have one machine where the network interface is taken down, every time I want to write some big files to a shared folder (NFS) on a server. This same machine can also run Solaris 10 and I have never had any problems like this with network connections. On the other hand I have a server with three ethernet ports (only one connected) and believe or not but 'nwam' selects the right adapter and otherwise works fine. This message posted from opensolaris.org
