cannot import repo or keys from packages.microsoft.com

English Network/Internet
1

I want to install dotnet packages, which I have done before without problem on an older machine.
Now,

 rpm --import https://packages.microsoft.com/keys/microsoft.asc

gives

curl: (7) Couldn't connect to server
error: https://packages.microsoft.com/keys/microsoft.asc: import read failed(2).

and

 wget https://packages.microsoft.com/config/opensuse/15/prod.repo

gives

--2021-11-17 10:22:24--  https://packages.microsoft.com/config/opensuse/15/prod.repo
Resolving packages.microsoft.com (packages.microsoft.com)... 40.114.136.21
Connecting to packages.microsoft.com (packages.microsoft.com)|40.114.136.21|:443... failed: Network is unreachable.

Using the commands on the older machine produces the files without any problem.

Connection with internet is OK, and i do not see differences (yet) in settings between the problem-machine and the older machine.

How do I find the cause and remedy it?

2

What do you mean with “older machine”?

Is that the age of the hardware, but has the same openSUSE 15.3 running?
or
It has an older version of openSUSE running?

3

Sorry, I meant a computer with Leap 15.2.
In the mean time, I have managed to get it working on another machine with Leap 15.3, but still no luck on the machine on which I want the dotnet packages.

4

dns problem?

5

Yes!

I apparently forgot to enter the IP address for the DNS.

It now works fine, thank you all!