IPv6: Update a comment

"advance" is used since commit 66df248b49095c261138b5a5e34d341a6bf9ac7f.

[skip ci]

diff --git a/print-ip6.c b/print-ip6.c
index bc91cb878008ac657482f02fc87744a204cd1686..dc4aa268b9caae370dbc49ea972ed0e035c350a1 100644 (file)
--- a/print-ip6.c
+++ b/print-ip6.c
@@ -385,7 +385,7 @@ ip6_print(netdissect_options *ndo, const u_char *bp, u_int length)
                case IPPROTO_MOBILITY_OLD:
                case IPPROTO_MOBILITY:
                        /*
-                        * XXX - we don't use "advance"; RFC 3775 says that
+                        * RFC 3775 says that
                         * the next header field in a mobility header
                         * should be IPPROTO_NONE, but speaks of
                         * the possibility of a future extension in