X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/9845aa1860a411c40e5f86b74443508d58fc67f9..cb696b8e91d9860dd30ec3b7dcb16424cd6e18ac:/print-udp.c

diff --git a/print-udp.c b/print-udp.c
index 4b5cd7c2..768f4bed 100644
--- a/print-udp.c
+++ b/print-udp.c
@@ -365,6 +365,11 @@ udp_print(netdissect_options *ndo, register const u_char *bp, u_int length,
 	sport = EXTRACT_16BITS(&up->uh_sport);
 	dport = EXTRACT_16BITS(&up->uh_dport);
 
+	if (!ND_TTEST(up->uh_ulen)) {
+		udpipaddr_print(ndo, ip, sport, dport);
+		ND_PRINT((ndo, "[|udp]"));
+		return;
+	}
 	if (length < sizeof(struct udphdr)) {
 		udpipaddr_print(ndo, ip, sport, dport);
 		ND_PRINT((ndo, "truncated-udp %d", length));