redirect to ip after login/logout

Hi! recently i've update joomla+joomdle+moodle and migrate on new machine. I've an issue on user login/logout.
When an user proceed to login, site is redirect on the ip address:I went crazy to understand why (i checked apache, redirect option on joomla login module etc...)
Now i find a very old post on forum that says that were was a problem with joomdle user hook: i try to disable joomdle user hook and the problem does not occur...
I dont have modify nothing on joomdle configuration...someone have some idea ?

thanks
Rob

Hi Rob.

I have never seen something like that... unles you have configured Joomdle with IP addresses instead of domain names. Please check Joomdle URLs in config in Joomla and Moodle.