Get RID of the multi threading patch in FreeBSDs version of PF

[Darren Pilgrim]

On 12/5/2014 6:09 PM, Martin Hanson wrote:
> Has any important bugs been fixed in PF on OpenBSD since the current
> port in FreeBSD that actually makes the current PF in FreeBSD
> "dangerous" to run with?

FreeBSD's pf is broken for IPv6.  Its lack of fragment support means a 
FreeBSD breaks EDNS0 and other large-packet protocols that rely on 
fragment headers.