Thu Aug 8 12:18:33 EDT 2019

symmetric connections, asymmetric setup

Even for eventually symmetric connections, it seems there is no way
out of an a-symmetric connection setup: one of both ends needs to
initiate.  There needs to be a first message.

Obvious when written down like that, but apparently something that
needs to be made explicit when building symmetric structures.

Also note that it could be made such that both ends can initiate.
Still the setup is asymmetric.