Right now IPv6 addressed are displayed using their long-form notation, which takes up needless additional space on smaller console windows.

Example:

root@router-1:~ # zerotier-cli listpeers
...
200 listpeers e4da7455b2 2001:41d0:0001:4982:0000:0000:0000:0001/52203;7653;7653 3809 1.2.5 LEAF

That address should be condensed down to 2001:41d0:1:4982::1 - a 20 character reduction, making it fit on a 80 character width terminal.

Also, yes, I'm aware that not all addresses can be condensed, but this is common enough that it helps readability.