ICMPv6: add a comment for the previous commit

[skip ci]

diff --git a/print-icmp6.c b/print-icmp6.c
index 5c5bd899d122180d166165bb848a8d857921b063..60b831bd84334413681a1b486a3c0792d096da87 100644 (file)
--- a/print-icmp6.c
+++ b/print-icmp6.c
@@ -1165,6 +1165,7 @@ icmp6_print(netdissect_options *ndo,
                break;
        case ICMP6_ECHO_REQUEST:
        case ICMP6_ECHO_REPLY:
+                /* The check below covers both icmp6_id and icmp6_seq. */
                 ND_TCHECK_2(dp->icmp6_seq);
                 ND_PRINT(", id %u, seq %u", EXTRACT_BE_U_2(dp->icmp6_id), EXTRACT_BE_U_2(dp->icmp6_seq));
                break;