X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/11d3a01319e295dcabfb2647302d278938449226..b07acab03ae9f76fe822ff9239d705f48efd270d:/print-vrrp.c

diff --git a/print-vrrp.c b/print-vrrp.c
index d8ba4265..a3976676 100644
--- a/print-vrrp.c
+++ b/print-vrrp.c
@@ -142,17 +142,21 @@ vrrp_print(netdissect_options *ndo,
 
 			vec[0].ptr = bp;
 			vec[0].len = len;
-			if (in_cksum(vec, 1))
+			if (in_cksum(vec, 1)) {
+				ND_TCHECK_16BITS(&bp[6]);
 				ND_PRINT((ndo, ", (bad vrrp cksum %x)",
 					EXTRACT_16BITS(&bp[6])));
+			}
 		}
 
 		if (version == 3 && ND_TTEST2(bp[0], len)) {
 			uint16_t cksum = nextproto4_cksum(ndo, (const struct ip *)bp2, bp,
 				len, len, IPPROTO_VRRP);
-			if (cksum)
+			if (cksum) {
+				ND_TCHECK_16BITS(&bp[6]);
 				ND_PRINT((ndo, ", (bad vrrp cksum %x)",
 					EXTRACT_16BITS(&bp[6])));
+			}
 		}
 
 		ND_PRINT((ndo, ", addrs"));