Instead of doing something like `export A="64:ff9b::"` and then using `ssh $A1.3.3.7`, it's apparently much easier to install a new software package and do `export LD_PRELOAD=/the/new/package` and hope it doesn't break anything...
host *.*.*.*
hostname 64:ff9:%h
(without the empty line)
Also work with scp, rsync,