as per tutorials when i started roscore i get the following warning. is it ok.

narasimhan@narasimhan-desktop:~$ roscore
... logging to /home/narasimhan/.ros/log/de495f1e-6988-11df-a4a2-9bbe77a5d3f4/roslaunch-narasimhan-desktop-3643.log

started roslaunch server http://narasimhan-desktop:44308/

SUMMARY
========

NODES

WARNING: IP address 127.0.1.1 for local hostname 'narasimhan-desktop' does not appear to match
any local IP address (127.0.0.1). 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 [3656]
ROS_MASTER_URI=http://narasimhan-desktop:11311/

setting /run_id to de495f1e-6988-11df-a4a2-9bbe77a5d3f4
process[rosout-1]: started with pid [3667]
started core service [/rosout]