This is about implementing the relay/proxy feature in the client, where either on transfer failure or when a remote flag is set, the client will act as a relay between the two LXDs.
+1, Useful feature.
+1, per tkuhlman's reference, to be able to copy image to a remote LXD
As i'd like to copy a container from my notebook at home to an external rootserver, +1.
Marking as blocked on #2402 and #1926