patch for IPSEC_NAT_T

[fwun at bigpond.net.au]

Hi,

I tried to compile freebsd 6.2 prerelease source with "options IPSEC_NAT_T", but it said "unknown option "IPSEC_NAT_T"" when I build it

Had IPSEC_NAT_T patch already built into the 6.2 pre source?

If not, where to obtain the patch?

Thanks
S