I found a strange behavior regarding the links referencing other posts in
In kasperd's answer
One previous answer has many details about that, which I am not going to repeat.
And in Basile Starynkevitch's answer
In addition of device nodes explained in other answers (created with mknod(2) or supplied by some devfs), notably the one from Sepahrad Salour, [...]
Both links lead back to the referencing post "How are “/dev” Linux files created?".
What's wrong and how can I fix this?