DNS: Fix handling of the server part of EDNS0 Cookie Option

cur_offset was not incremented for the server part, causing a
"Malformed packet" message.

Change-Id: I21cb876e0d70b1de0cb2f76d37edec4c2ec7c788
Reviewed-on: https://code.wireshark.org/review/14402
Reviewed-by: Michael Mann <mmann78@netscape.net>

diff --git a/epan/dissectors/packet-dns.c b/epan/dissectors/packet-dns.c
index 0d351398d4a32e3bfb31bfe4a536755d61d3ee99..6a6a72ef05a245f8948c519a54cbec1ea08e8fba 100644 (file)
--- a/epan/dissectors/packet-dns.c
+++ b/epan/dissectors/packet-dns.c
@@ -2776,6 +2776,7 @@ dissect_dns_answer(tvbuff_t *tvb, int offsetx, int dns_data_offset,
             rropt_len  -= 8;
             optlen -= 8;
             proto_tree_add_item(rropt_tree, hf_dns_opt_cookie_server, tvb, cur_offset, optlen, ENC_NA);
+            cur_offset += optlen;
             rropt_len  -= optlen;
         break;
           case O_EDNS_TCP_KA: