diff --git a/sys/netinet/ip_fastfwd.c b/sys/netinet/ip_fastfwd.c
index b4507a91b313..c0c618680b23 100644
--- a/sys/netinet/ip_fastfwd.c
+++ b/sys/netinet/ip_fastfwd.c
@@ -400,8 +400,9 @@ ip_tryforward(struct mbuf *m)
 				 */
 				m_clrprotoflags(m);
 
-				IP_PROBE(send, NULL, NULL, ip, nh.nh_ifp,
-				    ip, NULL);
+				IP_PROBE(send, NULL, NULL,
+				    mtod(m, struct ip *), nh.nh_ifp,
+				    mtod(m, struct ip *), NULL);
 				/* XXX: we can use cached route here */
 				error = (*nh.nh_ifp->if_output)(nh.nh_ifp, m,
 				    (struct sockaddr *)&dst, NULL);
diff --git a/sys/netinet/ip_output.c b/sys/netinet/ip_output.c
index 352aa375c770..78a5cc37f032 100644
--- a/sys/netinet/ip_output.c
+++ b/sys/netinet/ip_output.c
@@ -696,7 +696,8 @@ ip_output(struct mbuf *m, struct mbuf *opt, struct route *ro, int flags,
 			 */
 			m_clrprotoflags(m);
 
-			IP_PROBE(send, NULL, NULL, ip, ifp, ip, NULL);
+			IP_PROBE(send, NULL, NULL, mtod(m, struct ip *), ifp,
+			    mtod(m, struct ip *), NULL);
 			error = (*ifp->if_output)(ifp, m,
 			    (const struct sockaddr *)gw, ro);
 		} else