em device hangs on ifconfig alias ...

[Dan Nelson]

In the last episode (Jun 28), User Freebsd said:
> has anyone figured out why the em device 'hangs' for about 30-45
> seconds whenever you ifconfig alias a new IP on to the device?

The em driver resets the card when you add an IP to it, and unless
you've configured your switch not to autodetect fancy features on that
port, it may very well take 45 seconds for it to come up.  See:

  http://www.cisco.com/warp/public/473/12.html

  Using PortFast and Other Commands to Fix Workstation Startup
  Connectivity Delays
 
-- 
	Dan Nelson
	dnelson at allantgroup.com