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Proxy bind relay IP protocol mismatch (49694)

by Xunlei on 2023/01/28 11:23:26 AM

When I use UDP Trackers SOCKS5 proxy bound to IPv6 address this error occurs. IPv4 binding address works fine.

Captured packets:

+---------+---------------+----------+
00:00:00,000,000   ETHER
|0   |02|00|00|00|00|01|02|00|00|00|00|02|86|dd|60|0a|6b|42|00|18|06|80|fd|00|00|00|00|00|00|00|00|00|00|00|00|00|00|02|fd|00|00|00|00|00|00|00|00|00|00|00|00|00|00|01|05|9d|04|38|9f|28|ad|97|36|7f|d5|eb|50|18|20|bd|fa|22|00|00|05|02|00|02|

+---------+---------------+----------+
00:00:00,000,001   ETHER
|0   |02|00|00|00|00|02|02|00|00|00|00|01|86|dd|60|0d|85|5e|00|16|06|80|fd|00|00|00|00|00|00|00|00|00|00|00|00|00|00|01|fd|00|00|00|00|00|00|00|00|00|00|00|00|00|00|02|04|38|05|9d|36|7f|d5|eb|9f|28|ad|9b|50|18|20|bd|07|05|00|00|05|00|

+---------+---------------+----------+
00:00:00,000,002   ETHER
|0   |02|00|00|00|00|01|02|00|00|00|00|02|86|dd|60|0a|6b|42|00|1e|06|80|fd|00|00|00|00|00|00|00|00|00|00|00|00|00|00|02|fd|00|00|00|00|00|00|00|00|00|00|00|00|00|00|01|05|9d|04|38|9f|28|ad|9b|36|7f|d5|ed|50|18|20|bd|fa|28|00|00|05|03|00|01|00|00|00|00|00|00|

+---------+---------------+----------+
00:00:00,000,003   ETHER
|0   |02|00|00|00|00|02|02|00|00|00|00|01|86|dd|60|0d|85|5e|00|2a|06|80|fd|00|00|00|00|00|00|00|00|00|00|00|00|00|00|01|fd|00|00|00|00|00|00|00|00|00|00|00|00|00|00|02|04|38|05|9d|36|7f|d5|ed|9f|28|ad|a5|50|18|20|bd|df|a6|00|00|05|00|00|04|fd|00|00|00|00|00|00|00|00|00|00|00|00|00|00|01|04|38|

IPv6 relay should be used to pass IPv4 UDP datagram.

by janet on 2023/02/12 07:30:49 PM

Thanks very much for reporting this and including the packet trace. I asked the developer and this will be fixed for the next release 3.17.

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