There's a circuit switching relay protocol [1] in the works which will allow multi-hop connections. This is generally useful for situations where two nodes can't directly connect to each other, be it because of NAT, censorship, or simply because they don't have a transport protocol in common (e.g. js-ipfs in the browser).

That means nodes can soon use the Websockets transport to connect to a domain-fronted node (this part already works), which then acts as a relay.

[1] https://github.com/libp2p/specs/tree/master/relay