THanks Kerry and Brian, Now we provide 3 parameters to our customers to configure a IPv6 address manually: 128bit address, subnet prefix and default gateway (optional, if it is provided, it should be within the same subnet with the 128bit address). Should we set subnet prefix to a fixed value 64 if the 128bit address starts with 001-111? (ipv6 is a new feature in our appliance, we don't have much experiences about it) Thanks, washam PS: should we allow our customer configure 128bit address starting with 000 in the first place?
2011/7/16 Kerry Lynn <[email protected]>: > Brian, you're quite right. I had in mind only one particular class of IID. > Washam, see Appendix A of RFC 4291 regarding modified EUI-64 IIDs > with "u"=0. Also, RFC 3041 has been obsoleted; see RFC 4941 and > its errata if privacy issues apply in your situation. > -K- > > > On Fri, Jul 15, 2011 at 6:25 PM, Brian E Carpenter > <[email protected]> wrote: >> >> The authors of RFC 4291 chose not to use the upper case normative >> keyword convention defined in RFC 2119. Therefore, 'required' means >> what in means in plain English (i.e. REQUIRED in RFC2119ish). >> >> Brian >> >> On 2011-07-15 19:03, Washam Fan wrote: >> > Hi, >> > >> > I quoted this paragraph from RFC4291: >> > >> > For all unicast addresses, except those that start with the binary >> > value 000, Interface IDs are required to be 64 bits long and to be >> > constructed in Modified EUI-64 format. >> > >> > But I am not sure how to interpret the text in a correct way. >> > >> > If I assign an ordinary unicast address (except reserved anycast >> > addresses mentioned in RFC5453) to an interface and the address >> > doesn't start with 000, MUST the prefix be 64 bits? MUST the IID be >> > constructed in Modified EUI-64 format? >> > >> > We are providing WebUI for our customer to manually assign IPv6 >> > addresses, we want to do hygiene check before the actual move. >> > >> > Thanks in advance >> > washam >> > -------------------------------------------------------------------- >> > IETF IPv6 working group mailing list >> > [email protected] >> > Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 >> > -------------------------------------------------------------------- >> > >> -------------------------------------------------------------------- >> IETF IPv6 working group mailing list >> [email protected] >> Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 >> -------------------------------------------------------------------- > > -------------------------------------------------------------------- IETF IPv6 working group mailing list [email protected] Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
