Unable to connect to AMQP server

Hi,i meet a truble. I have installed ceilometer.
When run ceilometer-collector, the log says "Error : Unable to connect to AMQP server.[Errno-9] Address family for hostname not supported".
I know that is because of the hostname.
Host name is '0-AC-E3-50-94-6B'.
If change hostname to 'mytesthost', there is not any error.
But i want to name every host by its uniqe code, and the host name can not be changed.
Who can help me?
Thanks!