X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/d098ad2654ebba3240482e0bcf5be8c22f9a0d58..6c8ef0eb86a39c277d1a43802dd8ea01b51cfb2a:/print-hncp.c

diff --git a/print-hncp.c b/print-hncp.c
index c0e00644..c20d1e1a 100644
--- a/print-hncp.c
+++ b/print-hncp.c
@@ -68,8 +68,8 @@ hncp_print(netdissect_options *ndo,
 #define HNCP_EXTERNAL_CONNECTION   33
 #define HNCP_DELEGATED_PREFIX      34
 #define HNCP_PREFIX_POLICY         43
-#define HNCP_DHCPV4_DATA           37
-#define HNCP_DHCPV6_DATA           38
+#define HNCP_DHCPV4_DATA           37 /* This is correct, see RFC 7788 Errata ID 5113. */
+#define HNCP_DHCPV6_DATA           38 /* idem */
 #define HNCP_ASSIGNED_PREFIX       35
 #define HNCP_NODE_ADDRESS          36
 #define HNCP_DNS_DELEGATED_ZONE    39
@@ -229,6 +229,8 @@ print_prefix(netdissect_options *ndo, const u_char *prefix, u_int max_length)
         plenbytes += 1 + IPV4_MAPPED_HEADING_LEN;
     } else {
         plenbytes = decode_prefix6(ndo, prefix, max_length, buf, sizeof(buf));
+        if (plenbytes < 0)
+            return plenbytes;
     }
 
     ND_PRINT((ndo, "%s", buf));