Hi, Please see inline.
----- Original Message ----- From: Brian E Carpenter <[email protected]> Date: Tuesday, September 28, 2010 4:17 am Subject: Re: [Softwires] comments on draft-carpenter-softwire-sample-00 To: WashamFan <[email protected]> Cc: [email protected] > Hi, > > On 2010-09-27 21:05, WashamFan wrote: > > Hi, > > > > It says, > > > > The SAMPLE server will act as an IPv6 router. In the simplest case, > > it will forward all IPv6 packets to a default route, except those > > whose destination address lies within the PSAMPLE prefix, which > will > > be encapsulated and sent towards the host (CPE) and port > indicated by > > the V4ADDR and PN values. > > > > > > I think it is not appropriate to assume NAT traversal without > > relay can be always successful. > > I don't understand your comment. If you have a NAT that you cannot > traverse with UDP, you have many other problems, not just a lack > of IPv6 connectivity. I misunderstood. I thought the text implies direct tunnels established instead of hairpinning via SAMPLE server when SAMPLE client to SAMPLE client communication occurs . > > Hairpinning might be always used > > for simplicity. > > Yes, that is the SAMPLE model. And it's a discussion for the > community whether or not this is acceptable. > > > > > I'd like to know the status of the draft, is the WG pursuing this > > work? > > There are three drafts aiming at the same problem, SAMPLE, > draft-lee-softwire-6rd-udp, and draft-despres-softwire-6rdplus. > Please hold your breath, there's hope of a joint proposal > from several authors within a few days. Is it possible to combine all these efforts? I see 2 major difference between draft-carpenter-softwire-sample-00 and draft-lee-softwire-6rd-udp-02 at least: 1. According to the IPv6 address assignment, SAMPLE is to connect isolated IPv6 hosts but 6rd-udp is to connect both isolated IPv6 hosts and LANs. 2. They are different in terms of IPv6 address assignment procedure. SAMPLE uses ND but 6rd-udp might use RADIUS, let's say. Personally, I think it is meaningful to work on tunneling IPv6 traversing NAT, but I think we should justify the work by clarifying how bad Teredo did the job before we reinvent the wheel. THanks, washam > Brian > _______________________________________________ Softwires mailing list [email protected] https://www.ietf.org/mailman/listinfo/softwires
