```
cwilliams@db2248:~$ sudo systemctl status ifup@eno12399np0.service
× ifup@eno12399np0.service - ifup for eno12399np0
Loaded: loaded (/usr/lib/systemd/system/ifup@.service; static)
Active: failed (Result: exit-code) since Tue 2026-07-28 14:59:26 UTC; 1 day 22h ago
Duration: 154ms
Invocation: 68c0a7aa8fd14647a58942b10e2ca3f4
Process: 1138 ExecStart=/usr/sbin/ifup --allow=hotplug eno12399np0 (code=exited, status=1/FAILURE)
Main PID: 1138 (code=exited, status=1/FAILURE)
Mem peak: 2.5M
CPU: 72ms
Jul 28 14:59:26 db2248 systemd[1]: Started ifup@eno12399np0.service - ifup for eno12399np0.
Jul 28 14:59:26 db2248 ifup[1171]: Error: ipv6: address already assigned.
Jul 28 14:59:26 db2248 ifup[1138]: ifup: failed to bring up eno12399np0
Jul 28 14:59:26 db2248 systemd[1]: ifup@eno12399np0.service: Main process exited, code=exited, status=1/FAILURE
Jul 28 14:59:26 db2248 systemd[1]: ifup@eno12399np0.service: Failed with result 'exit-code'.
cwilliams@db2248:~$ ip link show eno12399np0
2: eno12399np0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000
link/ether 6c:92:cf:ef:47:c0 brd ff:ff:ff:ff:ff:ff
altname enp67s0f0np0
altname enx6c92cfef47c0
cwilliams@db2248:~$ ip addr show eno12399np0
2: eno12399np0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether 6c:92:cf:ef:47:c0 brd ff:ff:ff:ff:ff:ff
altname enp67s0f0np0
altname enx6c92cfef47c0
inet 10.192.58.6/24 brd 10.192.58.255 scope global eno12399np0
valid_lft forever preferred_lft forever
inet6 2620:0:860:12d:10:192:58:6/64 scope global dynamic mngtmpaddr proto kernel_ra
valid_lft 2591999sec preferred_lft 604799sec
inet6 fe80::6e92:cfff:feef:47c0/64 scope link proto kernel_ll
valid_lft forever preferred_lft forever
```