@ElodyTurner I do have the latest firmware. Even so, I don't think the C54 has the options that it needs to work with Comcast/Xfinity. As you mentioned, I think it needs DHCPv6 and ICMPv6 enabled....

@woozle Yes, my cable modem is just a cheap (Comcast approved) 1 Port deal with no routing or WiFi capability. I depend on the TP-Link to do that. But I've never had this much trouble getting IPv6 to...

@QRene Hi. Yes, my IPv6 settings look exactly like that on the C54. And, unfortunately, those are all of the options there are. I could use Passthrough mode (instead of Router mode) but my...

The C54 router is connected directly to my own cable modem using Dynamic IP to Comcast cable. IPv4 works fine on my local network with the C54 router in place but IPv6 address info doesn't pass...

Does anyone know how to make the Archer C54 work with Comcast Xfinity IPv6? In my area they use DHCPv6 with RA (Router Advertisement) and PD (Prefix Delegation). ICMPv6 must also be allowed. The...