Home internet service IPv6 traffic is all filtered even when using a Netgear LTE router. No port forwarding. Plz fix!

lfjeff wrote:

I just want to use IPv6 passthrough (bridge mode) so I can connect my external router. I don't need port forwarding or inbound access. I called before ordering the service and they told me this was possible - but I guess they lied.​​​

It sounds to me like you want IPv6 delegation, not passthrough. In pass through your router behind theirs actually acts as a bridge. In delegation their router accepts dhcpv6 requests and then delegates subnets to your router. TMHI supports passthrough just fine, unfortunately they do not support delegation.  They want to bundle prefixes to simplify their network and that complicates delegation, though there are plenty of both standard and nonstandard solutions that work to fix that and aren't even mutually incompatible. Ie they could implement both RFC 6603, prefix shortening and multi /64 prefix delegation all on the same device. All would solve the issue and none would interfere with each other.