On 2016/05/17 08:27, Brent Cook wrote: > This patch came by way of the openntpd github. Linux (and possibly others) > will attempt to bind to 0.0.0.0 when binding to '::' and return an error if > it can't, unless IPV6_V6ONLY is set.
Do you see why they're doing this? In an OS where IPV6_V6ONLY=0 is the default (i.e. allowing v4 on v6 sockets), someone binds to :: expecting to pick up all traffic. Now another user's process binds to 0.0.0.0.
