add vs6621 support in android

lin

2025-08-21 57113df3a0e2be01232281fad9a5f2c060567981

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:PREROUTING,OUTPUT
*nat
-p tcp -j REDIRECT --to-ports 42;=;OK
-p udp -j REDIRECT --to-ports 42-1234;=;OK
-p tcp -j REDIRECT --to-ports 42-1234 --random;=;OK
-j REDIRECT --to-ports 42;;FAIL