in the past under rhel7 i would do this

[root]# ip add add 192.168.12.29/24 dev enp0s13f0u1 label enp0s13f0u1:1
broadcast 192.168.12.255 noprefixroute
[root]# ip add show enp0s13f0u1
2: enp0s13f0u1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel
state UP group default qlen 1000
    link/ether a0:ce:c8:b2:22:f7 brd ff:ff:ff:ff:ff:ff
    inet 192.168.10.29/24 brd 192.168.10.255 scope global noprefixroute
enp0s13f0u1
       valid_lft forever preferred_lft forever
    inet 192.168.12.29/24 brd 192.168.12.255 scope global noprefixroute
enp0s13f0u1:1
       valid_lft forever preferred_lft forever

[root@cyan ~]# lnetctl net add --ip2net="tcp1(enp0s13f0u1) 192.168.10.*"
[root@cyan ~]# lnetctl net add --ip2net="tcp2(enp0s13f0u1:1) 192.168.12.*"
[root@cyan ~]# lctl list_nids
192.168.10.29@tcp1
192.168.12.29@tcp2

but i've upgraded to redhat9 using network manager fully now.  when i do

[root@cyan system-connections]# nmcli c modify Wired\ connection\ 1
ipv4.addresses "192.168.10.29/24,192.168.12.29/24"
[root@cyan system-connections]# nmcli c up Wired\ connection\ 1
Connection successfully activated (D-Bus active path:
/org/freedesktop/NetworkManager/ActiveConnection/22)
[root@cyan system-connections]# ip add show enp0s13f0u1
2: enp0s13f0u1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel
state UP group default qlen 1000
    link/ether a0:ce:c8:b2:22:f7 brd ff:ff:ff:ff:ff:ff
    inet 192.168.10.29/24 brd 192.168.10.255 scope global noprefixroute
enp0s13f0u1
       valid_lft forever preferred_lft forever
    inet 192.168.12.29/24 brd 192.168.12.255 scope global noprefixroute
enp0s13f0u1
       valid_lft forever preferred_lft forever

this doesn't work

[root@cyan ~]# lnetctl net add --ip2net="tcp1(enp0s13f0u1) 192.168.10.*"
[root@cyan ~]# lnetctl net add --ip2net="tcp2(enp0s13f0u1) 192.168.12.*"
[root@cyan ~]# lctl list_nids
192.168.10.29@tcp1
192.168.10.29@tcp2

i'm pretty sure this is expected behavior based on how lnet works, but i
figured i'd ask around
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