Hi, On Sun, 9 Mar 2003, Bound, Jim wrote: > 4.5.5 Stateful Address Autoconfiguration > Stateful Address Autoconfiguration MAY be supported. DHCP [DHCPv6] > is the standard stateful address configuration protocol. See section > 5.3 for details on DHCP. > > The above MAY should be a SHOULD. There is not mention of stateful > support from ND M or O bits being MAY. They simply can be used. It is > the option of the user not the standard. To not support any bits > suggested for use by users equal to stateless in the ND spec is > irresponsible for interoperability requirements in this standards track > document. This not being a SHOULD can cause sever interoperability for > clients where the user wants all clients to use stateful auto > configuration. Any assumption that it will not be used is premature and > we should error on the side of it being used. > > The wording in 5.3 supports the reason for a SHOULD in this section. > > I could argue it is a MUST but at minimum it is a SHOULD.
I think I can understand your argument here, but let me try to give a different perspective. If the user (I'd call him admin) requires that only stateful auto configuration is acceptable in the network segment by setting a few bits in the advertisement, he should do this only when he knows that all the clients do support these mechanisms. I would not want the requirement for implementing DHCPv6 any stronger that it has to be, ie MAY seems enough (with current experience) -- but I could just maybe accept SHOULD with strong disclaimers and clarifications. Did I understand the issue properly? Or was this about the hosts kernels executing DHCP when receiving M&O bits and "DHCP: file not found" would be an acceptable and a SHOULD-compliant outcome? -- Pekka Savola "You each name yourselves king, yet the Netcore Oy kingdom bleeds." Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings -------------------------------------------------------------------- IETF IPng Working Group Mailing List IPng Home Page: http://playground.sun.com/ipng FTP archive: ftp://playground.sun.com/pub/ipng Direct all administrative requests to [EMAIL PROTECTED] --------------------------------------------------------------------