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Linux Network Interface With No IP Address

Typically a network interface has an IP address (hopefully an IPv6 address too), but sometimes there's a need to bring up an interface without one. Turns out there is a standard way to set this up on Redhat-like system.

In /etc/sysconfig/networking-scripts/ifcfg-ethX, set:

BOOTPROTO="none"
ONBOOT="yes"

And that's it. Easy peasy.

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