QA:Testcase various IPv6 commands

Description

This test case tests the compatibility of various commands with IPv6.

Setup

1. Ensure the iputils, bind-utils, iproute, nc packages are installed.

How to test

1. Check if you have received an IPv6 address: ip address | grep inet6
   with Scope: Global as Scope: Link addresses will not work across a network.
2. Check if your DNS response to AAAA requests (IPv6 address):
   1. Using dig: dig ipv6.DOMAIN.TLD AAAA
   2. Using nslookup: nslookup -type=AAAA ipv6.DOMAIN.TLD
3. Ping a host with IPv6 address: ping6 IPV6_ADDR
4. Print the route packets trace to an IPv6 network host: traceroute6 IPV6_ADDR
5. Display IPv6 routes table: ip -6 route or route -A inet6
6. Use nc (netcat) on IPv6 network:
   1. Listen to port 8080 on IPv6 address: nc -l -6 IPV6_ADDR 8080
   2. Connect to IPv6 address listening to port 8080: nc -6 IPV6_ADDR 8080

Expected Results

1. The commands should work as with ipv4.