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Can a server's eth & wifi share the same IP address?
(lemmy.world)
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this post was submitted on 04 Jun 2026
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Thanks for the detailed explanation. Has this always been possible though? Was I just imagining that manually assigning to network adapters the same ip address wasn't possible?
It's often not possible on other operating systems. Especially the consumer versions of a certain operating system starting with "W", that system will refuse to have duplicate IPs.
But essentially it's always been possible (but, probably not preferred these days) to have redundant routes/paths on Unix systems. The way you have it now is more of a side effect of being able to do more complex network setups, like using different interfaces to talk to different subnets, or using a slow link as a backup to a fast link.
With your current setup you should get a slow failover ability, for example if you ping some other device and then unplug your Ethernet cable, you'll have a bit of a pause in replies and then they will start again as the stack switches to the other link.