the problem doesn't exist in a Feb kernel, but on a machine that I'm running the latest code on, doing an 'ifconfig em0' doesn't appear to be sending out the arp updates properly ... to the point that I had to manually delete the arp for an IP on one of the other servers, on the same network, so that they could talk to each other ... the other 'weird behaviour' that I'm getting with this kernel is that when I do do the ifconfig to bring an IP online, the network 'hangs' for 60+ seconds ... it looks like someone MFCd something back for this driver back in May: mercury# cd /sys/dev/em mercury# ls -lt total 486 -rw-r--r-- 1 root wheel 118971 May 22 11:19 if_em_hw.h -rw-r--r-- 1 root wheel 5501 May 22 11:19 if_em_osdep.h -rw-r--r-- 1 root wheel 227691 May 22 11:19 if_em_hw.c -rw-r--r-- 1 root wheel 9619 May 22 11:19 README -rw-r--r-- 1 root wheel 97880 May 22 11:19 if_em.c -rw-r--r-- 1 root wheel 14022 May 22 11:19 if_em.h -rw-r--r-- 1 root wheel 1609 Apr 4 2003 LICENSE mercury# While the server that does work, its em driver was from Oct: neptune# ls -lt total 406 -rw-r--r-- 1 root wheel 96678 Feb 3 00:18 if_em.c -rw-r--r-- 1 root wheel 4643 Oct 22 2004 if_em_osdep.h -rw-r--r-- 1 root wheel 14117 Oct 22 2004 if_em.h -rw-r--r-- 1 root wheel 185587 Oct 22 2004 if_em_hw.c -rw-r--r-- 1 root wheel 94374 Oct 22 2004 if_em_hw.h -rw-r--r-- 1 root wheel 10837 Sep 20 2003 README -rw-r--r-- 1 root wheel 1609 Apr 4 2003 LICENSE ---- Marc G. Fournier Hub.Org Networking Services (http://www.hub.org) Email: scrappy@hub.org Yahoo!: yscrappy ICQ: 7615664