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Accepted
fajin yu
Asked: 2020-09-22 22:58:59 +0800 CST

How can I restart a specificed interface instead of restart all interface?

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I have a server which OS is Ubuntu 18.04.03 configured four IP addresses on four different interfaces. Now there is a interface I need to restart, and I can not interfere with other three interfaces. So I think I can't using sudo netplan apply. Is there any way to restart specificed interface?
Thankyou in advance!

networking 18.04 netplan

2 Answers

  1. Best Answer

    Running sudo netplan apply should not cause interfaces to be brought down, if there are no changes to the configuration for those interfaces. So this should be safe to run. If you find that this command restarts interfaces whose configuration has not changed, that's a bug and should be reported at https://bugs.launchpad.net/netplan.

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  2. You can down and up the connection for particular interface with root permissions.

    ifdown <interface_name>
ifup <interface_name>

    Then reboot the system.

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