Support fallback to different DNS names for the same IRC network #435
Description
Some IRC networks have multiple DNS names for various reasons including resilience.
It'd be great if circ allowed me to join an IRC network via one DNS name, with auto-fallback to another DNS name in case the primary DNS name failed.
irssi supports this via the -network flag on https://irssi.org/documentation/help/server/ .
weechat supports this, e.g. /server add chatspike irc.chatspike.net/6667,irc.duckspike.net/6667