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A comment on Ask HN: What are you predictions for 2023?. Parent comment

Re:Ask HN: What are you predictions for 2023? by MzHN on Sunday December 25, 2022 @07:39AM (#34126722)
Does it work when both users have symmetric NAT with randomized ports?

WebRTC provides an abundance of hole punching, but as far as I've learned, nothing gets through symmetric NAT with randomized ports.

Except for relays (TURN), which isn't P2P.

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Re:Ask HN: What are you predictions for 2023? by Duplo on Sunday December 25, 2022 @12:52PM (#34129353)
A few weeks ago I tested a number of family phones using the online tools available and symmetric NAT was detected, some were very large UK mobile networks (Vodafone IIRC). That made me give up too.
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