any luck with vpnc?

[timothee]

Hey there,


I'm not managing to run vpnc, I just installed it from the angstrom repo (0.5.3-r1.6), set my config but it refuses to start with the following message:

~ # vpnc

vpnc: can't open /dev/net/tun, check that it is either device char 10 200 or (with DevFS) a symlink to ../misc/net/tun (not misc/net/tun): No such device

vpnc: can't initialise tunnel interface: No such device

I can see the device is there, and seems correct

~ # ls -al /dev/net/tun

crw-r----- 1 root root 10, 200 Dec 20 20:39 /dev/net/tun

but I'm not sure about the tun module:

~ # zcat /proc/config.gz | grep -i tun | grep -v TUNER

# CONFIG_INET_XFRM_TUNNEL is not set

CONFIG_INET_TUNNEL=m

CONFIG_INET_XFRM_MODE_TUNNEL=y

# CONFIG_INET6_XFRM_TUNNEL is not set

# CONFIG_INET6_TUNNEL is not set

CONFIG_INET6_XFRM_MODE_TUNNEL=m

# CONFIG_IPV6_TUNNEL is not set

CONFIG_TUN=m

# CONFIG_DVB_CINERGYT2_TUNING is not set

# Digital terrestrial only tuners/PLL


~ # lsmod     

Module                  Size  Used by

board_omap3pandora_wifi     1824  0 

wl1251_sdio             5124  0 

wl1251                 56576  1 wl1251_sdio

lib80211_crypt_ccmp     5696  0 

lib80211_crypt_wep      3776  0 

lib80211_crypt_tkip     9184  0 

lib80211                6560  3 lib80211_crypt_ccmp,lib80211_crypt_wep,lib80211_crypt_tkip

arc4                    1728  2 

pcbc                    3616  0 

ecb                     2784  2 

compat_firmware_class     8968  1 wl1251

mac80211              179276  2 wl1251_sdio,wl1251

cfg80211              147380  2 wl1251,mac80211

compat                  7072  2 mac80211,cfg80211

rfkill_backport        20020  1 cfg80211

bufferclass_ti          4496  0 

omaplfb                 9344  0 

pvrsrvkm              127336  2 bufferclass_ti,omaplfb

ipv6                  234504  10 

ads7846                 8896  0 

hwmon                   2452  1 ads7846


~ # modprobe tun

FATAL: Module tun not found.

Any advice?


Tim

 

[timothee]

anyone?

 

[TrashyMG]

Just from the looks of the error you either don't have a tunnel device (tun) created or it's not loaded in the kernel... try this...


at first try this line..

modprobe tun

if that doesn't work then you may need to create the device...

mknod /dev/net/tun c 10 200

modprobe tun

edit: noticed that you saw this device in the /dev folder.. hopefully modprobe will work...

 

[timothee]

Just from the looks of the error you either don't have a tunnel device (tun) created or it's not loaded in the kernel... try this...


at first try this line..

modprobe tun

if that doesn't work then you may need to create the device...

mknod /dev/net/tun c 10 200

modprobe tun

edit: noticed that you saw this device in the /dev folder.. hopefully modprobe will work...

Thanks for your reply! I had already tried modprobe tun (last 2 lines of the last code block in first post):

~ # modprobe tun

FATAL: Module tun not found.

Why is the module not found if the kernel was compiled with tunnel as module? Is that a packaging issue? Or must I do something extra?

 

[timothee]

Still not working for me, I noticed there's a package named "kernel-module-tunnel4", so I installed and modprobed that, but same error message still .


And I also saw the tun.ko does exist. Why can the kernel not load it?


See:

~ # opkg files kernel-module-tunnel4

Package kernel-module-tunnel4 (2.6.27-pandora+r21+git449c13a99bb39ced8dbea5daccc402c39f77455e-r21.5) is installed on root and has the following files:

/lib/modules/2.6.27.46-omap1/kernel/net/ipv4/tunnel4.ko


~ # modprobe tunnel4 ## <- no problem here!


~ # opkg files kernel-module-tun

Package kernel-module-tun (2.6.27-pandora+r21+git449c13a99bb39ced8dbea5daccc402c39f77455e-r21.5) is installed on root and has the following files:

/lib/modules/2.6.27.46-omap1/kernel/drivers/net/tun.ko


~ # modprobe tun

FATAL: Module tun not found.

tunnel4 is not enough to start vpnc.


Any other idea?

 

[Tim]

I just setup vpnc on my new openpandora and it all went well. Steps taken were as follows:


sudo su


opkg update


opkg install vpnc


cd /etc/vpnc


cp default.conf tim.conf


#set up a conf for my CISCO VPN


vi tim.conf


vpnc tim


#connected to servers at work


vpnc-disconnect

Still not working for me, I noticed there's a package named "kernel-module-tunnel4", so I installed and modprobed that, but same error message still .


And I also saw the tun.ko does exist. Why can the kernel not load it?


See:

~ # opkg files kernel-module-tunnel4

Package kernel-module-tunnel4 (2.6.27-pandora+r21+git449c13a99bb39ced8dbea5daccc402c39f77455e-r21.5) is installed on root and has the following files:

/lib/modules/2.6.27.46-omap1/kernel/net/ipv4/tunnel4.ko


~ # modprobe tunnel4 ## <- no problem here!


~ # opkg files kernel-module-tun

Package kernel-module-tun (2.6.27-pandora+r21+git449c13a99bb39ced8dbea5daccc402c39f77455e-r21.5) is installed on root and has the following files:

/lib/modules/2.6.27.46-omap1/kernel/drivers/net/tun.ko


~ # modprobe tun

FATAL: Module tun not found.

tunnel4 is not enough to start vpnc.


Any other idea?

 

[timothee]

Thanks for your reply Tim,


I can confirm that it works for me on hotfix 5 too, as per the steps you provided. I am now happily connected to my office servers


I believe I did do the exact same thing previously when I was on HF4, so I'm not sure if the problem I had was due to HF4, or if vpnc has been upgraded since then.


Cheers!


Tim

 

[Tavin]

I got vpnc up and running with the commands posted above, my problem is that I need the version with ssl support, under debian/ubuntu I know I can uncomment a few lines in the makefile and then build it myself, but how do I do that for/under pandora?