On 3 July 2016 at 12:15, Mark Tinka <mark.ti...@seacom.mu> wrote: > > > On 3/Jul/16 12:01, Ruairi Carroll wrote: > > > Core of the issue is that we _need_ to get an ICMP message back to the > original "real server" who sent it. It's a non-issue in the SP space, but > imagine if your ECMP groups were stateful in both directions... > > > Okay. > > > > > Think about it in layers, with each little piece adding up to the overall > cost: > > > I understand your points - to your comment, my question is around whether > it is cheaper (for you) to just run IPv6 in lieu of IPv6 and IPv4. > > Probably equal cost (ha ha) to pick one or the other. However since this conversation was started about people using excuses to not deploy....and being a stub/content provider, your main goal is reachability, to which v4 is still king.
So you have your hand forced to pick v4 for now. /Ruairi > Mark. >