Re: ISATAP in unmanaged networks?

[itojun@iijlab.net]

>I have not studied this space, but it occurs to me that ISATAP
>could be tried as a first alternative to check whether the two
>hosts are separated by a NAT. If there is no intervening NAT,
>it seems to me that ISATAP would provide the benefit of not
>needing the UDP header and "bubble" packets, yielding
>greater efficiency. Otherwise, if blocked by a NAT the
>initiating host coud after a short timeout try again with
>Teredo.

	ISATAP requires an ISATAP router in a site to advertise RA in a
	pretty weird fashion, which is clearly a drawback.

itojun