Ask Questions: If the two nodes are under the same router, can you directly connect to the LAN with the help of the external node at this time ?
Example:
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Hello!
Generally not. This is called hairpinning and this feature is disabled on a large number of routers by default, so we should not rely on it.
For peers discovery on LAN you can use broadcasting instead, for example.
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Thx, learned two new concepts! 