I am using ubuntu 14.04 and ros indigo. I have a problem in gazebo to running it. When I execute gazebo, it shows:

afroza@afroza-XPS-8700:~$ gazebo

Gazebo multi-robot simulator, version 2.2.6
Copyright (C) 2012-2014 Open Source Robotics Foundation.
Released under the Apache 2 License.
http://gazebosim.org

Msg Waiting for master

Gazebo multi-robot simulator, version 2.2.6
Copyright (C) 2012-2014 Open Source Robotics Foundation.
Released under the Apache 2 License.
http://gazebosim.org

Msg Waiting for master
sg Connected to gazebo master @ 32http://127.0.0.1:11345mMsg
 Connected to gazebo master @ http://127.0.0.1:11345
sgmMsg Publicized address:  Publicized address: 203.255.178.108
203.255.178.108

Here is the output of output of ifconfig, hostname, domainname, cat /etc/hosts, export |grep ROS:

afroza@afroza-XPS-8700:~$ ifconfig

eth0      Link encap:Ethernet  HWaddr 98:90:96:a5:28:95  
          inet addr:203.255.178.108  Bcast:203.255.178.255  Mask:255.255.255.0
          inet6 addr: fe80::9a90:96ff:fea5:2895/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:581262 errors:0 dropped:18 overruns:0 frame:0
          TX packets:54811 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:118878432 (118.8 MB)  TX bytes:5548102 (5.5 MB)


lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:265441 errors:0 dropped:0 overruns:0 frame:0
          TX packets:265441 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:17718552 (17.7 MB)  TX bytes:17718552 (17.7 MB)


wlan0     Link encap:Ethernet  HWaddr 80:19:34:b0:70:6b  
          inet addr:192.168.168.1  Bcast:192.168.168.255  Mask:255.255.255.0
          inet6 addr: fe80::8219:34ff:feb0:706b/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:122 errors:0 dropped:0 overruns:0 frame:0
          TX packets:323 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:10905 (10.9 KB)  TX bytes:79687 (79.6 KB)


afroza@afroza-XPS-8700:~$ hostname

afroza-XPS-8700
afroza@afroza-XPS-8700:~$ domainname

(none)
afroza@afroza-XPS-8700:~$ cat /etc/hosts

127.0.0.1   localhost

127.0.1.1   afroza-XPS-8700

 The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters

afroza@afroza-XPS-8700:~$ export |grep ROS

declare -x ROSLISP_PACKAGE_DIRECTORIES="/home/afroza/catkin_ws/devel/share/common-lisp"
declare -x ROS_DISTRO="indigo"
declare -x ROS_ETC_DIR="/opt/ros/indigo/etc/ros"
declare -x ROS_IP="192.168.168.1"
declare -x ROS_MASTER_URI="http://192.168.168.1:11311"
declare -x ROS_PACKAGE_PATH="/home/afroza/catkin_ws/src:/opt/ros/indigo/share:/opt/ros/indigo/stacks"

declare -x ROS_ROOT="/opt/ros/indigo/share/ros"

Hope anybody can help me. Thank you