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CONFIG_INET: TCP/IP networking

General informations

The Linux kernel configuration item CONFIG_INET:

Help text

These are the protocols used on the Internet and on most local Ethernets. It is highly recommended to say Y here (this will enlarge your kernel by about 400 KB), since some programs (e.g. the X window system) use TCP/IP even if your machine is not connected to any other computer. You will get the so-called loopback device which allows you to ping yourself (great fun, that!).

For an excellent introduction to Linux networking, please read the Linux Networking HOWTO, available from

If you say Y here and also to "/proc file system support" and "Sysctl support" below, you can change various aspects of the behavior of the TCP/IP code by writing to the (virtual) files in /proc/sys/net/ipv4/*; the options are explained in the file Documentation/networking/ip-sysctl.rst.

Short answer: say Y.



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