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The most important unimportant thing is: The ip command's -br flag, which I should've looked up much, much, much earlier. Since the advent of containerization, a simple ip a command produces so much output – in fact, often over multiple screenheights – that you've got to scroll around a lot to get an overview of the IPs which are currently in use.

-br flag to the rescue: This will create an abbreviated output version which might look like this:

lo               UNKNOWN        127.0.0.1/8 ::1/128
enp2s0           UP             172.24.1.22/16 172.24.1.1/16
node-13          UNKNOWN        172.31.13.11/32 fdb0:deca:b15:204::11/128
node-12          UNKNOWN        172.31.12.11/32 fdb0:deca:b15:203::11/128
node-14          UNKNOWN        172.31.14.11/32 fdb0:deca:b15:206::11/128
docker0          DOWN           172.17.0.1/16
br-cf2ffba9568e  UP             172.18.0.1/16 fe80::1432:4aff:fe65:24fa/64
veth3f0f5ef@if2  UP             fe80::5cad:c7ff:fe5a:fdb1/64
veth92338bc@if2  UP             fe80::1c62:5dff:fe7d:146d/64
vetha6d230c@if2  UP             fe80::3877:1dff:feb6:86e1/64