[ros-users] issues with roscore !

Hi

I get some odd messages when I use roscore, how can I rectify them ? though,
rosnode list and turtlesim works just fine !

Please help ! This is what I get ! .....


acer@acer:~$ roscore
... logging to
/home/acer/.ros/log/85cd288c-93ce-11df-8359-001b777e0253/roslaunch-acer-3735.log

started roslaunch server http://acer:41521/

SUMMARY
========

NODES

WARNING: IP address 127.0.1.1 for local hostname 'acer' does not appear to
match
any local IP address (127.0.0.1,172.16.63.119,172.16.246.1,192.168.183.1).
Your ROS nodes may fail to communicate.

Please use ROS_IP to set the correct IP address to use.
starting new master (master configured for auto start)
process[master]: started with pid [3748]
ROS_MASTER_URI=http://acer:11311/

setting /run_id to 85cd288c-93ce-11df-8359-001b777e0253
process[rosout-1]: started with pid [3759]