The checksum is optional in UDP-over-IPv4, so go back to the earlier

behavior where it's checked only with -vv and higher.

diff --git a/print-udp.c b/print-udp.c
index f4517feed6465022c90247ff565e8aaec7d5e9b1..5e564cded8dc8366521b300d0c031795767afc96 100644 (file)
--- a/print-udp.c
+++ b/print-udp.c
@@ -568,7 +568,7 @@ udp_print(register const u_char *bp, u_int length,
        }
        udpipaddr_print(ip, sport, dport);
 
-       if (IP_V(ip) == 4 && vflag && !Kflag && !fragmented) {
+       if (IP_V(ip) == 4 && (vflag > 1) && !Kflag && !fragmented) {
                int sum = up->uh_sum;
                if (sum == 0) {
                        (void)printf("[no cksum] ");