PMTU discovery?

[Dan Nelson]

In the last episode (Jul 17), Val Smith said:
> Hi,
> 
> I have a quick question and hope it isn't too
> newb :)
> 
> Does FBSD support PMTU discovery on ethernet
> interfaces and, if so, how is it enabled? I've
> looked in the man pages for both ifconfig and xl
> but could only seem to find reference to manually
> setting MTU, not autodiscovery. I know how to set
> this with windows registry but want it for a FBSD
> 5.1 workstation as well.

sysctl net.inet.tcp.path_mtu_discovery

It defaults to 1 (enabled).

-- 
	Dan Nelson
	dnelson at allantgroup.com