[ale] AT&T fiber and IPv6?

[James Sumners (ALE)]

Sounding a lot like I’ll be hoping Comcast actually tries to compete now that AT&T has brought actual broadband to my area. 😔


On February 12, 2022 at 19:17:58, Bryan L. Gay (ale at bryangay.com) wrote:

I had both Comcast and AT&T Fiber for years in Kennesaw. I was never able to get IPv6 delegation working reliably on AT&T, even after they stopped doing 6rd. I have Comcast now at the new place, 1.2Gbps downlink, and have never had an issue with Comcast's IPv6. AT&T just never seemed to get their act together. While having 1Gbps symmetric over IPv4 was great, and it was less expensive, I'm happily on Comcast, now. AT&T requires you use their gateway, which introduces other recurring problems. On Comcast, I own my own DOCSIS dumb modem.

On Fri, Feb 11, 2022, 17:06 James Sumners (ALE) via Ale <ale at ale.org> wrote:


Earlier today AT&T attached some fiber to the pole directly across the street from my driveway. I’m sure it will take them another month or two to activate the line, but I want to go ahead and solicit some knowledge from you folks.

Currently, I’m on Comcast (plain residential). I despise the business, but their network people are top notch and have rolled out a nice stable IPv6 network. They assign my WAN interface a `/128` and allow network assignments via a `/64` or `/60` prefix delegation over DHCPv6. The `/60` allows me to create multiple VLANs in my house for things like IoT devices separate from my primary devices.

Does anyone have experience with AT&T’s IPv6 implementation? Would switching to them be mostly transparent in this regard? Are there any “gotchas” that I should be aware of?
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