Re: [Softwires] are multiple Domain IPv6 prefixes possible?

2011-08-19 Thread Rémi Després
Le 18 août 2011 à 09:18, Washam Fan a écrit : It seems to me, when delegating CE ipv6 prefix, a longest match might be used. OK, but, again, if a realistic use case is available where longest match is indeed REQUIRED, there is no problem to impose longest match. What is missing so far is

Re: [Softwires] are multiple Domain IPv6 prefixes possible?

2011-08-19 Thread Washam Fan
2011/8/19 Rémi Després despres.r...@laposte.net: Le 18 août 2011 à 09:18, Washam Fan a écrit : It seems to me, when delegating CE ipv6 prefix, a longest match might be used. OK, but, again, if a realistic use case is available where longest match is indeed REQUIRED, there is no problem to

Re: [Softwires] are multiple Domain IPv6 prefixes possible?

2011-08-18 Thread Jacni Qin
On 8/18/2011 1:19 PM, Washam Fan wrote: It seems to me, when delegating CE ipv6 prefix, a longest match might be used. But when forwarding a IPv4 packet, a longest match is useless, because domain 4rd prefixes don't overlap. Why? Sorry, I don't follow. The domain IPv4 prefixes can overlap.

Re: [Softwires] are multiple Domain IPv6 prefixes possible?

2011-08-18 Thread Rémi Després
Hi Washam, Le 18 août 2011 à 07:19, Washam Fan a écrit : It seems to me, when delegating CE ipv6 prefix, a longest match might be used. OK, but, again, if a realistic use case is available where longest match is indeed REQUIRED, there is no problem to impose longest match. What is missing so

Re: [Softwires] are multiple Domain IPv6 prefixes possible?

2011-08-18 Thread Washam Fan
It seems to me, when delegating CE ipv6 prefix, a longest match might be used. OK, but, again, if a realistic use case is available where longest match is indeed REQUIRED, there is no problem to impose longest match. What is missing so far is this use case. can i cite Tetsuya's examples to

Re: [Softwires] are multiple Domain IPv6 prefixes possible?

2011-08-18 Thread Washam Fan
Hi, It seems to me, when delegating CE ipv6 prefix, a longest match might be used. But when forwarding a IPv4 packet, a longest match is useless, because domain 4rd prefixes don't overlap. Why? Sorry, I don't follow. The domain IPv4 prefixes can overlap. if domain 4rd prefixes overlap, when

Re: [Softwires] are multiple Domain IPv6 prefixes possible?

2011-08-18 Thread Rémi Després
Le 18 août 2011 à 09:18, Washam Fan a écrit : It seems to me, when delegating CE ipv6 prefix, a longest match might be used. OK, but, again, if a realistic use case is available where longest match is indeed REQUIRED, there is no problem to impose longest match. What is missing so far is

Re: [Softwires] are multiple Domain IPv6 prefixes possible?

2011-08-18 Thread Washam Fan
Hi Jacni 2011/8/18 Jacni Qin ja...@jacni.com: On 8/18/2011 3:24 PM, Washam Fan wrote: Hi, It seems to me, when delegating CE ipv6 prefix, a longest match might be used. But when forwarding a IPv4 packet, a longest match is useless, because domain 4rd prefixes don't overlap. Why? Sorry,

Re: [Softwires] are multiple Domain IPv6 prefixes possible?

2011-08-18 Thread Washam Fan
Hi Remi 2011/8/18 Rémi Després despres.r...@laposte.net: Le 18 août 2011 à 09:18, Washam Fan a écrit : It seems to me, when delegating CE ipv6 prefix, a longest match might be used. OK, but, again, if a realistic use case is available where longest match is indeed REQUIRED, there is no

Re: [Softwires] are multiple Domain IPv6 prefixes possible?

2011-08-18 Thread Rémi Després
Le 18 août 2011 à 10:42, Washam Fan a écrit : Hi Remi 2011/8/18 Rémi Després despres.r...@laposte.net: Le 18 août 2011 à 09:18, Washam Fan a écrit : It seems to me, when delegating CE ipv6 prefix, a longest match might be used. OK, but, again, if a realistic use case is available

Re: [Softwires] are multiple Domain IPv6 prefixes possible?

2011-08-17 Thread Washam Fan
It seems to me, when delegating CE ipv6 prefix, a longest match might be used. But when forwarding a IPv4 packet, a longest match is useless, because domain 4rd prefixes don't overlap. Thanks, washam 2011/8/17 Rémi Després despres.r...@laposte.net: Le 17 août 2011 à 03:10, Jacni Qin a écrit :

Re: [Softwires] are multiple Domain IPv6 prefixes possible?

2011-08-16 Thread Washam Fan
Hi, 2011/8/16 Rémi Després despres.r...@laposte.net: Hi Tetsuya-san, I agree, of course, on the need to support several mapping rules. Is there anywhere in the draft to mention how to deliver these rules? As my understanding, the provisions described in section 4 only can generate a mapping

Re: [Softwires] are multiple Domain IPv6 prefixes possible?

2011-08-16 Thread Rémi Després
Le 16 août 2011 à 16:06, Washam Fan a écrit : Hi, 2011/8/16 Rémi Després despres.r...@laposte.net: Hi Tetsuya-san, I agree, of course, on the need to support several mapping rules. Is there anywhere in the draft to mention how to deliver these rules? You can look at

Re: [Softwires] are multiple Domain IPv6 prefixes possible?

2011-08-16 Thread Tetsuya Murakami
Sorry. I have a typo. The following address has no meaning... Sorry again. Tetsuya Murakami On 2011/08/16, at 21:16, Tetsuya Murakami wrote: Hi Remi, Jacni, We are considering the following situation. Initially, one 4rd mapping rule can be set like {2408:db8::/32, 10.10.0.0/24, 48}.

Re: [Softwires] are multiple Domain IPv6 prefixes possible?

2011-08-16 Thread Rémi Després
Le 17 août 2011 à 03:10, Jacni Qin a écrit : hi Remi, On 8/16/2011 4:27 PM, Rémi Després wrote: ... As already discussed privately, I don't know realistic cases where two rules would have IPv6 or IPv4 overlapping prefixes. Consequently, it seems that longest match, while being

Re: [Softwires] are multiple Domain IPv6 prefixes possible?

2011-08-15 Thread Tetsuya Murakami
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