running python bindings, transfers fail if no derper is available

[Arqu]

Running two nodes on to machines on a local network. If a derper is not available (ie cut off from outside traffic) the nodes fail to connect directly with the ticket they exchanged.
The same setup works with regular nodes with iroh start and iroh get --ticket

[Arqu]

Eh.... it's 99% this line

iroh-ffi/src/node.rs

Line 633 in cd72647

.bind_addr(DEFAULT_BIND_ADDR.into())

I need to be able to provide the bind address.

[Arqu]

This currently depends on it n0-computer/chuck#33

[Arqu]

Done now.