diff --git a/sys/netinet/udp_usrreq.c b/sys/netinet/udp_usrreq.c
--- a/sys/netinet/udp_usrreq.c
+++ b/sys/netinet/udp_usrreq.c
@@ -544,12 +544,12 @@
 			char b[offsetof(struct ipovly, ih_src)];
 			struct ipovly *ipov = (struct ipovly *)ip;
 
-			bcopy(ipov, b, sizeof(b));
+			memcpy(b, ipov, sizeof(b));
 			bzero(ipov, sizeof(ipov->ih_x1));
 			ipov->ih_len = (proto == IPPROTO_UDP) ?
 			    uh->uh_ulen : htons(ip_len);
 			uh_sum = in_cksum(m, len + sizeof (struct ip));
-			bcopy(b, ipov, sizeof(b));
+			memcpy(ipov, b, sizeof(b));
 		}
 		if (uh_sum) {
 			UDPSTAT_INC(udps_badsum);