[PATCH RFC v2 0/3] dhclient: add --prefix-len option

H. Peter Anvin hpa at zytor.com
Wed Dec 2 21:52:25 UTC 2015

On 12/02/2015 01:46 PM, H. Peter Anvin wrote:
> On 12/02/2015 12:47 PM, Shawn Routhier wrote:
>> I merged them last night (my time - US PT) so it would depend on when you
>> did the pull.  I haven’t reviewed your changes yet so it’s possible that there
>> aren’t issues, but given the quick look I did on the first patch I think you would
>> have noticed.
> Yes, in fact looks like we implemented several similar things although
> in slightly different ways.  Unfortunate timing.  I will try to update
> the patchset as soon as possible.
> RFC 7550 seems to imply that unsatisfied prefix requests should be
> repeated in at least a REBIND message, possibly a REQUEST message too?

Sorry, not REQUEST, but RENEW.  RFC 7550, section 4.4.8:

      The requesting router MAY include IA_PD options without any
      prefixes, i.e., without an IA Prefix option or with the IPv6
      prefix field of the IA Prefix option set to 0, in a Renew or
      Rebind message to obtain bindings it desires but has been unable
      to obtain.  The requesting router MAY set the "prefix-length"
      field of the IA Prefix option as a hint to the server.  As in
      [RFC3315], the requesting router MAY also provide lifetime hints
      in the IA Prefix option.

... so issuing these as part of RENEW or REBIND seems to make sense.


More information about the dhcp-workers mailing list