Lennart Poettering
e5f8ce13bb
So Linux has this (insane — in my opinion) "feature" that if you name a network interface "foo%d" then it will automatically look for the interface starting with "foo…" with the lowest number that is not used yet and allocates that. We should never clash with this "magic" handling of ifnames, hence refuse this, since otherwise we never know what the name is we end up with. We should probably switch things from a deny list to an allow list sooner or later and be much stricter. Since the kernel directly enforces only very few rules on the names, we'd need to do some research what is safe and what is not first, though.
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