User Freebsd said the following on 6/30/06 1:48 PM:

see 'arping' ... great little tool, solved all my problems as far as moving around IPs ...

Thanks for the tip, I will try it next time.

I still have many 4.x based machines, and both em issues (the card reset on each alias and the arp packets not been sent when going down) were present when I was doing my tests.

Right, what version of 4.x? The one that I have working is from ~Feb 2005 .. if I were to upgrade that to the latest 4-STABLE, it would break like the rest ... the older 4.x had a different em driver in the kernel then the newer one ...

The problem was initially discovered back in 2003 (must have been with 4.8 or 4.9) and after switching back to fxp I haven't tested the 4.x branch any more.

I remember testing 5.x around the 5.3 release (2004) and 6.x shortly after 6.0 (2005), and both em driver versions shipped with these releases were having the same issues.

I haven't tested it this year yet, but even in case it's fixed, it's not likely that all improvements will get back-ported to the older branches (over 90% of my servers run something older than 6.x). But as long as fxp works, this is a non-issue for me.

Regards,
Atanas
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