arp response fails

[Charles Swiger]

On Dec 15, 2015, at 2:47 PM, bcs <bimmer at field.hu> wrote:
> I have 3 FreeBSD 10.2-RELEASE machines and all of them suffers of the following problem. They are not responding to ARP requests which causes network problem for me, other hosts can't access my FBSD machines on the LAN nor my FBSD hosts can see each other unless I add permanent arp entry.

My first guess is a misconfigured firewall.
What does "sysctl -a | grep arp" show?

(Your network tuning is probably extreme except for specialized situations,
but it shouldn't prevent basic ARP from working.  Buggy NICs or iLO / LOM are
another possibility.)

Regards,
-- 
-Chuck