Why used DHCPv6 when RA has RDNSS and DNSSL?

sthaug at nethelp.no sthaug at nethelp.no
Wed Apr 1 14:12:00 CEST 2020


> There are several reasons that people shout about DHCPv6:
...
> - politics: probably the most contentious area. One well-known example
> - is how ipv6 on cellular impacts carrier vs handset control
> - politics. 3GPP specifies that the ppp context for tethering must
> - support SLAAC and therefore it provides a /64 for LAN
> - connectivity. This means that the handset applications have as much
> - address space as they need.  The argument goes that if DHCPv6 were a
> - viable option for this, then the mobile operators would effectively
> - wrestle control of the applications running on the handset (and
> - ultimately control of the handset capabilities itself away from the
> - handset software vendors) by handing control of the number of
> - available IPv6 addresses to the cellular operator.  This is, at least,
> - the reason cited by the Android authors for the point-blank refusal to
> - implement DHCPv6 in android (bug ID 32621).

We are already 90% of the way here: Make IA_PD work for hosts, not
just for routers. That way Android handsets can have as many addresses
as they want.

Steinar Haug, AS2116



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