I’m trying to get IPv6 addressing working on my Time Warner Cable (TWC) WAN connection. On my Balance 20 I have the IPv6 setting enabled, and have selected the proper WAN port. Yet when the connection is made it always picks up an IPv4 address. If I plug my laptop directly into the cable modem (eliminating the Peplink) it will immediately get an IPv6 (and IPv4) address from TWC. The IPv4 address is dramatically different than what the Peplink has always shown for that WAN connection so apparently TWC puts me into a different IPv4 network for their IPv6 support.
As quoted a few times by Peplink staff members:
When enabling IPv6 support on a WAN, the WAN router must respond to Stateless Address Autoconfiguration advertisements and DHCPv6 requests.
I think the fact that my laptop running OS X 10.10.1 can get an IPv6 address automatically assigned is proof that the WAN router itself is fully capable.
I’m guessing that perhaps the Balance 20 is doing a DHCP request first (versus DHCPv6) when it attempts to make the WAN connection, and that’s why TWC gives it an IPv4 address in the range where IPv6 isn’t needed/supported.
What further debugging can I do, or what setting(s) can I change to make this WAN connection come alive for IPv6? In case it matters, my cable modem is a brand new Motorola/Arris SB6141 (which has ZERO settings available to change).