Guys i logged in to wlm 2011 with my local server and yes its possible.
You must only have a wlm 2009 local server and wlm 2011 installed
and then boom you can log in but WARNING! This method is sometimes not working, because of the not support jet. Also please be patient, and try again and again to log in try to change the ports in the firewall or an good idea: Install radmin vpn and message to one of your friend to make he a local server, and then you can connect to your friends local server using radmin vpn only you must edit the hosts file and install the certificate. TRY OUT!! BUT SADLY MESSAGES DOESNT WORKING JET IN wlm 2011.
PC REQUIREMENTS FOR WLM 2011:
Suggested os by me: Win 7 service pack 1 or normal win 7
Unsuggested os: Win 10 , i dont suggest to install wlm 2011 on win 10 jet, because i tried to log in, but alway it says error. You must have win 7, or use win 7 virtual machine to do it.