#20729: proto 'none' overwriting tun interfaces
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Reporter: openwrt@… | Owner: developers
Type: defect | Status: new
Priority: normal | Milestone:
Component: base system | Version: Chaos Calmer 15.05
Keywords: |
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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.
--
Ticket URL: <https://dev.openwrt.org/ticket/20729>
OpenWrt <http://openwrt.org>
Opensource Wireless Router Technology
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