if there more than a multiaddr option, we would lose the ability to call getObservedAddrs
if there more than a multiaddr option, we would lose the ability to call getObservedAddrs

diasdavid/node-ipfs-swarm,diasdavid/js-libp2p-swarm,libp2p/js-libp2p-swarm,diasdavid/node-libp2p-swarm