Why used DHCPv6 when RA has RDNSS and DNSSL?

Fernando Gont fernando at gont.com.ar
Thu Apr 2 04:22:30 CEST 2020


On 1/4/20 09:12, sthaug at nethelp.no wrote:
>> 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.

You mean e.g. support IA_PD at CPEs on the LAN side?

Thanks!

Cheers,
-- 
Fernando Gont
e-mail: fernando at gont.com.ar || fgont at si6networks.com
PGP Fingerprint: 7809 84F5 322E 45C7 F1C9 3945 96EE A9EF D076 FFF1





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