zoom: return addinfo="proxy failure" for proxy failures. This also
changes the scheme for dealing with proxies a bit. zoom now always
do proxy check, even if there's no failover. Fortunately, that's not
zoom: return addinfo="proxy failure" for proxy failures. This also
changes the scheme for dealing with proxies a bit. zoom now always
do proxy check, even if there's no failover. Fortunately, that's not