title: Android studio emulator network bridge is not worked
body: <p>I'd like to start developing with <code>react-native</code>. I install android studio 2.3.3 with emulator. My host machine is Windows 7 Phenom 965. I create Nexus 5X API24 Android 7 arm (also tried Nexus 6 arm64).</p>
  
  <p>The build system of react-native start program in android which can not download package from packager due to network unreacheble. 
  I read about networking in android <a href="https://developer.android.com/studio/run/emulator-networking.html" rel="nofollow noreferrer">here</a> and inspect networking from <code>adb shell</code></p>
  
  <p></p>
  
  <pre class="lang-js prettyprint-override"><code>generic:/ $ ifconfig
  lo        Link encap:UNSPEC
            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:4 errors:0 dropped:0 overruns:0 frame:0
            TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:0
            RX bytes:248 TX bytes:248
  
  eth0      Link encap:UNSPEC
            inet addr:10.0.2.15  Bcast:10.0.2.255  Mask:255.255.255.0
            inet6 addr: fe80::5054:ff:fe12:3456/64 Scope: Link
            inet6 addr: fec0::5054:ff:fe12:3456/64 Scope: Site
            UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
            RX packets:1 errors:0 dropped:0 overruns:0 frame:0
            TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000
            RX bytes:110 TX bytes:316
  
  generic:/ $ ping 10.0.2.15
  PING 10.0.2.15 (10.0.2.15) 56(84) bytes of data.
  64 bytes from 10.0.2.15: icmp_seq=1 ttl=64 time=10.8 ms
  ^C
  --- 10.0.2.15 ping statistics ---
  1 packets transmitted, 1 received, 0% packet loss, time 31ms
  rtt min/avg/max/mdev = 10.829/10.829/10.829/0.000 ms
  generic:/ $ ping 10.0.2.2
  connect: Network is unreachable
  generic:/ $ ping 10.0.2.1
  connect: Network is unreachable
  generic:/ $ ping 8.8.8.8
  connect: Network is unreachable
  </code></pre>
  
  
  
  <p>Disabling Windows firewall does not solve the problem. Also no any firewall question dialog is appears.</p>
  
  <p>Any help very appreciated.</p>