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Originally reported for upstream: https://github.com/util-linux/util-linux/issues/1704
Reproducer (see last UUID segment):
$cat /sys/class/net/eno1/address
78:24:af:89:16:70
$ uuidgen -t
d1fd6e2a-e280-11ec-bfa6-7824af891670
^^^^^^^^^^^^
$ sudo systemctl start uuidd.service uuidd.socket
$ uuidgen -t
dca6f21a-e280-11ec-aa9a-a1947ddd01b8
^^^^^^^^^^^^
The problem is the restrictive systemd service configuration
RestrictAddressFamilies=AF_UNIX
but libuuid uses
sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);
to get MAC address.
Fixed by upstream commit https://github.com/util-linux/util-linux/commit/304b4dc4936b115ca33af5325c3b04d0997c1353
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (util-linux bug fix and enhancement update), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2022:8404