An interface has accumulated several stale addresses from repeated manual configuration. Type the complete iproute2 command that removes every address currently assigned to eth0 in one step, while leaving the device itself up.

LPIC-1 Exam 102-500, objective 109. Networking fundamentals medium

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Answer

Type the answer.

Accepted answers

Case sensitive — Linux is, and grading LS as ls would teach a falsehood.

Why

The flush subcommand of the address object deletes all addresses matching the given selector, so it clears in one command what would otherwise need an `ip addr del` for each entry. It operates only on addresses: the link stays administratively up and its routes are untouched, although routes that depended on a removed address are dropped by the kernel. Restricting the sweep to one family, as in `ip -4 addr flush dev eth0`, is the safe habit when IPv6 autoconfiguration is also in use.

Where this comes from

Cited
manual page ip-address(8)

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