replace m_copym2 with m_dup_pkt in pf.c

[David Gwynne]

the subject says it all.  could someone who uses dup-to try this?

ok?

Index: pf.c
===================================================================
RCS file: /cvs/src/sys/net/pf.c,v
retrieving revision 1.966
diff -u -p -r1.966 pf.c
--- pf.c        4 Mar 2016 22:38:23 -0000       1.966
+++ pf.c        22 Mar 2016 11:59:50 -0000
@@ -5487,7 +5487,7 @@ pf_route(struct mbuf **m, struct pf_rule
        }
 
        if (r->rt == PF_DUPTO) {
-               if ((m0 = m_copym2(*m, 0, M_COPYALL, M_NOWAIT)) == NULL)
+               if ((m0 = m_dup_pkt(*m, max_linkhdr, M_NOWAIT)) == NULL)
                        return;
        } else {
                if ((r->rt == PF_REPLYTO) == (r->direction == dir))
@@ -5646,7 +5646,7 @@ pf_route6(struct mbuf **m, struct pf_rul
        }
 
        if (r->rt == PF_DUPTO) {
-               if ((m0 = m_copym2(*m, 0, M_COPYALL, M_NOWAIT)) == NULL)
+               if ((m0 = m_dup_pkt(*m, max_linkhdr, M_NOWAIT)) == NULL)
                        return;
        } else {
                if ((r->rt == PF_REPLYTO) == (r->direction == dir))