Ndisc6 gathers a few diagnostic tools for IPv6 networks including: - ndisc6, which performs ICMPv6 Neighbor Discovery in userland, - rdisc6, which performs ICMPv6 Router Discovery in userland, - rltraceroute6, a UDP/ICMP IPv6 implementation of traceroute, - tcptraceroute6, a TCP/IPv6-based traceroute implementation, - tcpspray6, a TCP/IP Discard/Echo bandwidth meter, - addrinfo, easy script interface for hostname and address resolution, - dnssort, DNS sorting script.