00:47:12 <gotwf> I want to rename a nic so I can replace it as per dladm rename-link man page example.  Yet driving rename link spews thusly:
00:47:14 <gotwf> dladm: rename operation failed: link busy
00:48:09 <gotwf> Never amounted to much of a Solaris admin.  Cluebats appreciated. 
01:30:37 <nomad> At a guess, you can't rename a configured/active link. 
01:52:12 <gotwf> Right.  So how to temporarily render inactive?
02:23:01 <sommerfeld> First thing I'd try would be to unplumb ip off of it (ipadm disable-if or ifconfig xx0 unplumb).  
02:23:32 <sommerfeld> best bet is to do this when you can reboot the machine afterwards to clean up any mess and verify that persistent config is correct
02:24:05 <sommerfeld> (well, if you're going to rename it, ipadm delete-if might be more what you want)