Am Donnerstag, 5. April 2018, 04:42:26 CEST schrieb Tore Anderson:
> * Thomas Schäfer
>
> > Expecting that the networkmanager asks only for a prefix, I only allowed
> > DHCPv6-PD at my router.
> > But NM also asks for an address via dhcpv6. (Identity Association for Non-
> > temporary Address)
> >
> > Why?
>
> Check with rdisc6 if your router sets the M flag in the RA?
The answer is complex. The router allows a lot of different settings.
dhcpv6-server - off , dns-only, dns+IA_PD, dns+IA_PD+IA_NA
stateful address conf - user, no , no , yes
stateful other conf - user, yes , yes , yes
"user" means users choice for RA O-flag set, M-and O-flag set(with AAC) and M-
and O-flag set(without AAC)
AAC (aoutonomous address configuration)
My problem was/is, that NetworkManager requests
a prefix and an address in case of
"O-flag" + DHCPv6-DNS+IA_PD, but not M-flag
>
> > Are there further possibilities? Something like bridging or ndp-proxying,
> > in case there is no prefix available?
>
> There's RFC 7278 for sharing a 3GPP /64 assignment to downstream devices,
> but this isn't implemented in NM to the best of my knowledge.
It was my hope, that mm/nm have implemented such a mode in the meantime.
Thomas
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