openvpn/setroute

   1 #!/bin/bash
   2
   3 vpnserver="sthu.org"
   4
   5 serverip=$(host ${vpnserver} | awk '{ print $4 }')
   6 vpnip=$(route -n | grep -m 1 "tun0" | awk '{ print $1 }')
   7
   8
   9 defgw=$(route -n | grep -m 1 "^0.0.0.0" | awk '{ print $2 }')
  10 defif=$(route -n | grep -m 1 "^0.0.0.0" | awk '{ print $8 }')
  11 echo "current default gw ${defgw} dev ${defif}"
  12 echo ""
  13
  14
  15 echo "add route to ${serverip} via dev ${defif}"
  16 route add -host $serverip gw ${defgw} dev ${defif}
  17 echo "remove old default route via gw ${defgw}"
  18 route del default gw ${defgw}
  19 echo "add default gw ${vpnip} (vpnip)"
  20 route add default gw ${vpnip}
  21
  22 echo ""
  23 echo "Press to restore default route"
  24 read
  25
  26
  27 echo "restore default gw ${defgw} dev ${defif}"
  28 route add default gw ${defgw} dev ${defif}
  29 echo "remove default route"
  30 route del default gw ${vpnip}
  31 echo "remove route to ${serverip}"
  32 route del ${serverip} gw ${defgw}
  33
  34