mtr doesn't work in strict IPv6-only environment on MacOS

[mdavids]

I am in a strict IPv6-only environment on my Macbook (with DNS64+NAT64) to the extend where I have even deleted 127.0.0.1 (ifconfig lo0 delete 127.0.0.1).

When I do an 'mtr -6' in that case, it fails:

Error decoding localhost address (connect failed/Can't assign requested address)
mtr: Failure to start mtr-packet: Invalid argument

Only after adding 127.0.0.1 again, it starts working again.