I'm following the tutorial to learn openvpn(
http://backreference.org/2010/03/26/tuntap-interface-tutorial/)
by following the steps of the part: `let's try it`
I use openvpn to create an interface tun2, and assign an IP to it
sudo openvpn --mktun --dev tun
sudo ip link set tun2 up
sudo ip addr add 10.0.0.1/24 dev tun2
then I use tcpdump to monitor the packets flowing through `tun2`
sudo tcpdump -i tun2
and I input `ping 10.0.0.2` on terminal, but I see nothing on tcpdump
output, also the `ping` is stuck without outputing anything.
in the tutorial, it says since the tun2 interface is assinged an IP
10.0.0.1/24, then the ping packet with 10.0.0.2 should pass through `tun2`
coz there will be a default route. But this doesn't happen in my case.
#sudo route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0
wlan0
10.0.0.0 0.0.0.0 255.255.255.0 U 0 0 0
tun2
192.168.0.0 0.0.0.0 255.255.255.0 U 9 0 0
wlan0
And it is also strange that the ping is stuck without outputing anything.
In the tutorial, the results should be like:
# ping 10.0.0.2
PING 10.0.0.2 (10.0.0.2) 56(84) bytes of data.
From 10.0.0.1 icmp_seq=2 Destination Host Unreachable
From 10.0.0.1 icmp_seq=3 Destination Host Unreachable
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