Maxscale 1.2 fails to start

Dear community,

I upgraded maxscale to 1.2 but when starting receive such bounces:

2015-07-28 15:47:09 Error: Failed to set socket options. Error 95: Operation not supported
2015-07-28 15:47:09 Error : Unable to start to listen port 0 for MySQLClient Read Connection Router.
2015-07-28 15:47:09 Error: MySQL version is lower than 5.5 and 'mysql51_replication' option is not enabled, replication tree cannot be resolved. To enable MySQL 5.1 replication detection, add 'mysql51_replication=true' to the monitor section.

socket is set to
socket=/tmp/readconn.sock

Read Connection Router directive is set to
[Read Connection Router]
type=service
router=readconnroute
#readonly user
servers=ib1
user=maxscale
passwd=***
router_options=slave

And regarding mysql version am I violating some compatibilities of v1.2 ?

Thanks ahead
Sergey