FreeBSD NFS server not responding to TCP SYN packets from Linux/SunOS clients

[Jim Rees]

The tcp spec says that after a reboot an implementation shouldn't send any
packets until at least the maximum segment lifetime has elapsed since the
crash.  So technically the nfs client machine is at fault.  But that doesn't
really help you.

Having sobind return a random port instead of always counting up from 798
(or whatever) might be the right fix here.  Later versions of FreeBSD might
even do this already.