Hi Washam, We can allow to use multiple mapping rules in a 4rd domain. In this case, there are several mapping rules and one mapping rule consists of the following parameters.
Domain IPv6 prefix Domain 4rd prefix CE IPv6 prefix length Domain IPv6 suffix (optional) When delegating an IPv6 prefix from the network, the corresponding mapping rule whose domain ipv6 prefix has the longest match with the delegated ipv6 prefix, can be selected. Also, when forwarding an IPv4 packet to another CE, the corresponding mapping rule whose domain 4rd prefix has the longest match with the the destination ipv4 address, can be selected. It is stated in section 5.1.1 and section 7 a little bit in the draft. Thanks, Tetsuya Murakami On 2011/08/14, at 5:52, Washam Fan wrote: > Hi, > > It seems to me only one domain IPv6 prefix is allowed, per > draft-murakami-softwire-4rd-00. But I see no issue if we allow > multiple domain IPv6 prefixes. E.g., when a CE tries to encapsulate a > outbound IPv4 package, the matched rule can tell which domain ipv6 > prefix can be used for building outer IPv6 destination address. > > Thanks, > washam > _______________________________________________ > Softwires mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/softwires _______________________________________________ Softwires mailing list [email protected] https://www.ietf.org/mailman/listinfo/softwires
