IPv6 with AT&T Prepaid Hotspot
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I'd like to use an AT&T Prepaid Hotspot plan with a Netgear LM1200 LTE modem as a backup connection. It works OK with IPv4 but I can't get IPv6 working on either 2.5.2 or 2.6.0.
The modem doesn't get an IPv6 address in either bridge or router mode. I still have an AT&T DSL connection and I've been using their 6rd gateway (2602:300::/28 via 12.83.49.81) for years, but it doesn't work with the LTE connection.
Is there some trick to making 6rd work I'm not aware of?
Because the IPv4 connection uses CGNAT addresses that don't respond to pings I don't think I can use an HE tunnel. I've gotten WireGuard working with my own VPS and will use that if I have to.
Thanks.
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Do they offer 6rd on wireless? My carrier, Rogers, provides native IPv6 on wireless, but only a single /64. This means the device connected to wireless will get an IPv6 address, but not any device behind it.
A bit of history. Many years ago, my wireless carrier was called "Cantel AT&T" when they partnered with AT&T. This goes back to when Rogers owned part of Unitel, a company I used to work for, and AT&T had a slice of it too. Even now, AT&T is the preferred company for Rogers to roam on in the U.S., though I think T-Mobile is the other choice.