Training courses
Kernel and Embedded Linux
Bootlin training courses
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rdr on em0 inet proto tcp all -> 1.1.1.1 port 2121 pass out log quick on lo0 route-to (lo0 127.0.0.1) inet all flags S/SA keep state pass in log quick on lo0 route-to (lo0 ::1) inet6 all flags S/SA keep state