Hi all,
I've been compiling OpenWRT builds for my home router (Netgear WNDR3800 and now
a WD MyNet N750) for a number of years. I just recently encountered a problem
with the OpenVPN tun interfaces are showing up without IP addresses after a
reboot. I have the following in my /etc/config/network:
config interface 'vpn_udp'
option ifname 'tun0'
option proto 'none'
config interface 'vpn_tcp'
option ifname 'tun1'
option proto 'none'
Then, my /etc/openvpn/udp.ovpn and /etc/openvpn/tcp.ovpn reference "dev tun0"
and "dev tun1", respectively. I do it this way so I can link "vpn_udp" and
"vpn_tcp" into /etc/config/firewall, and other places, like I would any other
network interface. What I expect is that the tun0 and tun1 interfaces look like
this after a reboot:
tun0 Link encap:UNSPEC HWaddr
00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:10.28.10.1 P-t-P:10.28.10.1 Mask:255.255.255.0
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
tun1 Link encap:UNSPEC HWaddr
00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:10.28.11.1 P-t-P:10.28.11.1 Mask:255.255.255.0
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:253526 errors:0 dropped:0 overruns:0 frame:0
TX packets:356519 errors:0 dropped:834 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:16948392 (16.1 MiB) TX bytes:451900041 (430.9 MiB)
However the interfaces look like this instead:
tun0 Link encap:UNSPEC HWaddr
00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
tun1 Link encap:UNSPEC HWaddr
00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Note, the IP addresses are missing. Hence, even though the openvpn processes
are running, traffic won't flow because the tun interfaces have had their IP
addresses wiped. I have to manually run "/etc/init.d/openvpn restart" to get
everything back to normal after reboot.
Am I missing something? This is happening on freshly compiled images from both
the latest trunk and latest 15.05.
Any thoughts and/or suggestions would be most appreciated.
Thanks,
Adam
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