Change default bind address to the unspecified address 0.0.0.0 #2
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The default bind address is currently 127.0.0.1, which means we always use the loopback device and cannot connect to a remote host unless we pass in a socket / bind address in the config.
For me, this means the hyperswarm-rs hyperchat example will not work when the given bootstrap node is a remote host, even if we pass in a non-loopback ip using the
--bindoption, as this option is used only to configure tcp / utp connections to peers, not where to bind the dht node.I think the default bind address should be the unspecified address (0.0.0.0) as this gives most flexibility - we can still use localhost for testing and also connect to remote hosts.