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Address configuration state machine #5

Closed otroan closed 2 months ago

otroan commented 4 months ago

Is a state machine needed to show how a host should configure itself? I presume the intention of the draft is to prefer the host using PD. How much of a delay in configuring a SLAAC address should a use?

furry13 commented 2 months ago

Is a state machine needed to show how a host should configure itself?

Section 6.2 discusses the use of the delegated prefixes.

I presume the intention of the draft is to prefer the host using PD. How much of a delay in configuring a SLAAC address should a use?

The draft (-06) currently says:

"If the host does not obtain any suitable prefixes via DHCPv6 PD that are suitable for SLAAC, it MAY choose to disable further processing of the P flag on that interface, allowing the host to fall back to other address assignment mechanisms, such as forming addresses via SLAAC (if the PIO has the A flag set to 1) and/or requesting individual addresses via DHCPv6."

I assume it's what you are looking for. I do not think hardcoding any specific timeouts are useful, it should be left to the implementation. The node might choose not to fallback at all.

ekline commented 2 months ago

Generally clear, but one chunk of text in S6.1 is worded a little bit too double/triple-negative-y, if you take my meaning:

                    Similarly, unless the host processes at least one
   PIO with the P bit not set, the host SHOULD NOT request individual
   IPv6 addresses from DHCPv6, i.e., it SHOULD NOT include any IA_NA or
   IA_TA options in Solicit, Renew or Rebind messages.

Can this be phrased in a more straightforward way?

bobhinden commented 2 months ago

Draft will be updated in next version.