On Apr 22, 2010, at 2:40 PM, Brian E Carpenter wrote: > However, consider that the flow label is a forgeable field, not > protected by any checksum (including IPSEC).
> So maybe mutability is in fact the only way to make it safe to > use across domain boundaries? Interesting. I had it in my head that AH protected it. Mutability, to me, is a good thing. It means that an ISP can use it, as suggested, to carry a load balancing hash, or an egress identifier. Or for that matter an ingress identifier for tracing purposes. I'll have to think about the implications of that. http://www.ipinc.net/IPv4.GIF -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------