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chore(advanced): clarify multiple connections over relays #911

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chore(advanced): clarify multiple connections over relays #911

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6 changes: 5 additions & 1 deletion advanced/device-numconnections.rst
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Expand Up @@ -61,4 +61,8 @@ default, TCP has better priority than QUIC, so establishing a TCP connection
will cause existing QUIC connections to be closed. Connection priorities can
be configured.

Multiple connections cannot be established over relays.
When connected via a relay, only one connection is normally established.
However, with some lucky timing, e.g. when attempting to reconnect after losing
a connection, it is also possible to establish one relay connection in each
direction, if the two devices are listening on different relays. In such a case,
the GUI will show `1 + 1` connections.