Allow custom low ports addition -p

[jjtseng93]

• I'm here to provide a quick solution.
• In case somebody urgently needs this
• But since it is completely vide coded, it requires more testing to become solid
• Attached below
• the 1st one uses a PROOT_NETLINK_ROUTE=1 to return correct addresses
• the 2nd one uses PROOT_PORT_ADD=3000 to pass a custom addition value

Problem description

1. nodejs/bun os.networkInterfaces() returns system error 13
2. proot -p not able to set custom addition values to achieve docker-like port mapping

Steps to reproduce

1. pd login debian -> node -e "console.log(os.networkInterfaces())"
2. LD_PRELOAD= proot -p -S /path/to/debian/rootfs /usr/bin/node -e "http.createServer((q,s)=>s.end('hello')).listen(80)"

Expected behavior

1. Return IP addresses from different interfaces
2. Have a custom option for adding to the original port

Additional information

patches.zip

[sylirre]

os.networkInterfaces() going to be addressed as part of #359