Issues with Ubuntu Network Setup

Question

image of Ubuntu network settings

Please, someone tell me whats up here, I am going bonkers, I have used multiple calculators etc, everything tells me the details in the image are correct but ubuntu just will not accept.

What information did Hetzner give you? – Michael Hampton Jun 02 '21 at 21:02 — Michael Hampton, Jun 02 '21 at 21:02
You can't have a host 230 in a subnet 255.255.255.240/28 – Gerard H. Pille Jun 02 '21 at 21:37 — Gerard H. Pille, Jun 02 '21 at 21:37

score 0 · Answer 1 · answered Jun 03 '21 at 00:27

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The subnet should be set to 148.251.119.230/28 in your case I think. What you have set is a combination of a netmask and CIDR notation which doesn't work.

See https://askubuntu.com/questions/1073244/set-static-ip-on-ubuntu-core for a previous answer.

answered Jun 03 '21 at 00:27

Phil McKerracher

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Is that a subnet or an ip address divided by 28? – Gerard H. Pille Jun 03 '21 at 01:35

score 0 · Answer 2 · answered Jun 03 '21 at 17:13

The cause of your confusion is that you mixed up the terms subnet and netmask.

So if you have been given a 148.251.119.230/28 address by your provider (which is equivalent to a 255.255.255.240 netmask) you should fill the subnet field with 148.251.119.224/28.

Issues with Ubuntu Network Setup

2 Answers2