I opened MythWeb after upgrading to Fedora 22 found that it couldn't connect to port :6543
I found this in the MythBackend log file
2015-08-20 18:03:10.717807 C [1525/1525] CoreContext serverpool.cpp:267 (SelectDefaultListen) - ServerPool: Host is configured to listen on 192.168.0.2, but address is not used on any local network interfaces.
[root@mythbox .mythtv]# netstat -n | grep ":6543"
tcp 0 0
127.0.0.1:44792 127.0.0.1:6543 ESTABLISHED
tcp 0 0
127.0.0.1:44791 127.0.0.1:6543 ESTABLISHED
tcp 0 0
127.0.0.1:6543 127.0.0.1:44791 ESTABLISHED
tcp 0 0
127.0.0.1:6543 127.0.0.1:44792 ESTABLISHED
I googled a few solutions about and found that a SSD base solution was starting backend before network is initialized.