Apply by doing: cd /usr/src patch -p0 < 008_isakmpd.patch And then rebuild and install isakmpd: cd sbin/isakmpd make obj make depend make make install Index: sbin/isakmpd/ipsec.c =================================================================== RCS file: /cvs/src/sbin/isakmpd/ipsec.c,v retrieving revision 1.122 retrieving revision 1.122.2.1 diff -u -p -r1.122 -r1.122.2.1 --- sbin/isakmpd/ipsec.c 23 Sep 2005 14:44:03 -0000 1.122 +++ sbin/isakmpd/ipsec.c 19 Aug 2006 20:23:28 -0000 1.122.2.1 @@ -2076,9 +2076,10 @@ ipsec_proto_init(struct proto *proto, ch { struct ipsec_proto *iproto = proto->data; - if (proto->sa->phase == 2 && section) - iproto->replay_window = conf_get_num(section, "ReplayWindow", - DEFAULT_REPLAY_WINDOW); + if (proto->sa->phase == 2) + iproto->replay_window = section ? conf_get_num(section, + "ReplayWindow", DEFAULT_REPLAY_WINDOW) : + DEFAULT_REPLAY_WINDOW; } /*