TomatoUSB

Hi,

I use OpenVPN (with v1.28.9051 MIPSR2-beta22 K26 USB vpn3.6 on RT-N16) and I set "Start with WAN" flag: sometimes openvpn doesn't start when I light on my router.

I get these from log (after kernel messages):

Jan 1 01:00:52 rt-n16 user.info kernel: tun: Universal TUN/TAP device driver, 1.6
Jan 1 01:00:52 rt-n16 user.info kernel: tun: (C) 1999-2004 Max Krasnyansky <moc.mmoclauq|kxam#moc.mmoclauq|kxam>
Jan 1 01:00:52 rt-n16 user.info init[1]: VPN_LOG_ERROR: 136: Creating tunnel interface failed…

If I start VPN manually all works normally.

Do you have any experience about this problem?

TIA

Today same results: can anyone help me?

TIA

I presume the issue is the WAN UP script issue in build 51…which I experienced and can say is now fixed in build 52.

Known issues with this build:
•WAN-Up script sometimes is not getting executed.

Jan  1 01:00:56 tomato-ng user.info init[1]: VPN_LOG_ERROR: 545: Creating tunnel interface failed...

Same here build 52 on WNR3500L

I analyzed again my log file and I found that this problem occurs when openvpn starts before router synchs date with ntp time server.

If openvpn starts when router's date is January 1, openvpn fails to start: it's possible to start time synchs before?

TIA

Aha, probably something related to "replay protection" in OpenVPN.

If it's sensitive to the system time being set correctly, the fix is simple -just change the code to wait for a few seconds for time synchronization. Will do it in the next build. As with any timing issue, currently it's hit or miss depending on the moon phase ;)…

Thanks teddy_b :)

Other problem is following:

Jan 1 01:00:52 rt-n16 user.info kernel: tun: Universal TUN/TAP device driver, 1.6
Jan 1 01:00:52 rt-n16 user.info kernel: tun: (C) 1999-2004 Max Krasnyansky <moc.mmoclauq|kxam#moc.mmoclauq|kxam>
Jan 1 01:00:53 rt-n16 user.info init[1]: VPN_LOG_ERROR: 136: Creating tunnel interface failed..

This one it's not related to time synchs (I suppose) but always often when I light-on router: anyone has same results with rt-n16?

TIA

- Maybe this expérimental build with newer libraries can improve your OpenVPN errors : http://dl.free.fr/vDBbBXOKy
- you can also start openvpn in command line with config file : the error messages sometimes give better information. ..

@alex:
How is it the other problem, and not the same as before?
What makes you think it's not time-sync related? The date/time is still not set when the error occurred, according to your log…