Description of problem:
In https://issues.redhat.com/browse/OCPBUGS-11281, it has been observed that when you rename a net device with 'ip link ... set name ...', the device's previous name becomes its altname. This causes a problem when you try to rename the device back and the existence of the altname prevents you. OCP ran into this issue.

Version-Release number of selected component (if applicable):
in RHEL 9.2: systemd-252-8.el9.x86_64
also in Fedora ELN: systemd-253.2-1.eln126.x86_64

How reproducible:
always

Steps to Reproduce:

[root@localhost ~]# ip link show enp1s0
2: enp1s0: <BROADCAST,MULTICAST> mtu 1500 qdisc fq_codel state DOWN mode DEFAULT group default qlen 1000
link/ether 52:54:00:a2:18:9e brd ff:ff:ff:ff:ff:ff
[root@localhost ~]# ip link set enp1s0 name foo
[root@localhost ~]# ip link show foo
2: foo: <BROADCAST,MULTICAST> mtu 1500 qdisc fq_codel state DOWN mode DEFAULT group default qlen 1000
link/ether 52:54:00:a2:18:9e brd ff:ff:ff:ff:ff:ff
altname enp1s0

Actual results:
'foo' now has 'enp1s0' as its altname.

Expected results:
No new altname.

Additional info:
In RHEL 8, it behaves as expected.

Proposed fix for upstream:
https://github.com/systemd/systemd/pull/27506