On 23 October 2012 14:16, Rob Laidlaw <laidlaw@consecro.com> wrote:
RFC 2526 reserves the last 128 host addresses in each subnet for anycast use.
IPv4 addresses ending in .0 and .255 can't be used either because the top and bottom addresses of a subnet are unusable. Why would hetzner be making such assumptions about what is and is not a valid address on a remote network? if you have a route to it then it is a valid address that you should be able to exchange packets with, any assumptions beyond that are almost certainly going to be wrong somewhere. Even if they did happen to correctly guess what sized subnets a remote network is using and what type of access media that remote network is using, I am pretty sure it would be wrong to assume that these addresses can't be accessed remotely considering the only address that is currently defined :) I really hope this is down to some kind of bug and not something someone did deliberately. - Mike