MAP-T (was: Re: V6 still not supported)

Jared Brown nanog-isp at
Fri Mar 25 13:49:13 UTC 2022

Most IPv6 transition mechanisms involve some form of (CG)NAT. After watching a NANOG presentation on MAP-T, I have a question regarding this.

Why isn't MAP-T more prevalent, given that it is (almost) stateless on the provider side?

Is it CPE support, the headache of moving state to the CPE, vendor support, or something else?

NANOG 2017
Mapping of Address and Port using Translation MAP T: Deployment at Charter Communications

- Jared

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