title: where is the configuration file for the routing and gateway under centos?
body: <p>where is the configuration file for these result ?</p>
  
  <pre><code>route -n
  Kernel IP routing table
  Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
  192.168.0.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
  169.254.0.0     0.0.0.0         255.255.0.0     U     1002   0        0 eth0
  0.0.0.0         192.168.0.204   0.0.0.0         UG    0      0        0 eth0
  </code></pre>
  
  <p>there entries aren't found in the following files</p>
  
  <pre><code>/etc/sysconfig/network
  /etc/sysconfig/network-scripts/route-eth0
  </code></pre>
  
  <p>when i update GATEWAY in /etc/sysconfig/network-scripts/ifcfg-eth0, but when i run </p>
  
  <pre><code>route -n
  </code></pre>
  
  <p>it gives me the old result:</p>
  
  <pre><code>Kernel IP routing table
  Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
  192.168.0.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
  169.254.0.0     0.0.0.0         255.255.0.0     U     1002   0        0 eth0
  0.0.0.0         192.168.0.204   0.0.0.0         UG    0      0        0 eth0
  </code></pre>
  
  <p>where i should search to find these entries?</p>