Tinc blocking on DNS requests?

[Raul Dias]

As I understood, A and B are on the same network.
When the network is cut from the Internet, why wouldn't A and B talk to
each other?

On Wed, Mar 14, 2018 at 11:45 AM, codl <codl at codl.fr> wrote:

> Hello list, I have a bug to report
>
> I have a tinc network of hosts composed of two hosts on a network, let's
> call them A and B, and a number of remote hosts over the internet, that
> I'll collectively call C. A and B both ConnectTo each other and to C
>
> The config files for C refer to them by DNS hostname, while A and B have
> plain IP addresses. This will be relevant
>
> When A and B are cut off from the internet, I'd expect A and B to still be
> able to talk to each other, but in practice it works for a time and then
> stops working for a few minutes, comes back for a time, etc. Modifying the
> host config files for C on both A and B to point at IP addresses rather
> than DNS hosts seems to fix it.
>
> I suspect that tinc is waiting for DNS requests to time out and not
> routing any packets in the meantime
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