Ripped from Fedora.

* Thu May 27 1999 Richard Henderson <rth@twiddle.net>
- avoid unaligned traps writing into the output data area.

--- traceroute-1.4a5/traceroute.c
+++ traceroute-1.4a5/traceroute.c
@@ -258,7 +258,7 @@ struct hostinfo {
 struct outdata {
 	u_char seq;		/* sequence number of this packet */
 	u_char ttl;		/* ttl packet left with */
-	struct timeval tv;	/* time packet left */
+	struct timeval tv __attribute__((packed)); /* time packet left */
 };
 
 u_char	packet[512];		/* last inbound (icmp) packet */
@@ -917,7 +917,7 @@ send_probe(register int seq, int ttl, re
 	/* Payload */
 	outdata->seq = seq;
 	outdata->ttl = ttl;
-	outdata->tv = *tp;
+	memcpy(&outdata->tv, tp, sizeof(outdata->tv));
 
 	if (useicmp)
 		outicmp->icmp_seq = htons(seq);