Serg via bind-users <bind-users@lists.isc.org> wrote:
> As an alternative approach I have tried to run with a configuration
> "listen-on-v6 { any; }", but it does behave in a way I need - it binds
> separate socket for each discovered IP address rather wildcard address
> of [::].Bind needs to bind a new socket for each address so that it can easily know which address is being communicated with. While there are newer ways to do this, they aren't that portable. What is the problem with binding to all the addresses, if you then filter which addresses will actually respond? Many large authoritative resolvers put the anycast address on the lo, and then use BGP to announce connectivity, and AFAIK, they all just listen on all addresses, because sometimes you want to ask a specific server a question.
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