1) diag_traceroute.php the IPv4 traceroute when
resolving IPs to hostnames outputs both,
but the IPv6 traceroute6 only shows the hostnames and not the
address. My suggestion is to use -l when ipv6 when not using -n. (see traceroute6 -l)
2) the max hops for FreeBSD IPv6 traceroute6 is
255, which the max allowed IPv6 "hops limit". Maybe it should
allow that? Then again, the nginx may Time-out beyond 64?
(My list of bugs is at http://reedmedia.net/books/pfsense/bugs-20160813.html )