Problem with my custom kernel with tun module

I am trying to make juniper vpn to work. Then I tried whatever said in this website. geekyschmidt.com/2010/05/11/juniper-connect-64bit-debian Now, my kernel is all messed. It seems like module tun is working... Code: $ lsmod | grep tun tun                      762  0 But I got this error Code: $dmesg | grep tun [  21.327778] tun: module license 'unspecified' taints kernel. I used cisco anyconnect vpn client and kvpnc. Both were working ok. They are also broken now. Code: AnyConnect was not able to establish a connection to the specified secure gateway. Please try connecting again. Code: error: Device file "/dev/net/tun" cannot be opened. debug: There is a reason to stop connecting, terminating "vpnc" process. debug: Disconnect requested debug: Disconnect requested, status connecting debug: Killing process while connecting. error: [disconnect err] SIOCDELRT: No such process error: [disconnect err] success: Successful connect try canceled. debug: Disconnected. error: Tunnel interface cannot be initialized. I am using Linux image 2.6.26-2-amd64. I tried to remove module tun. It did not work. I thought If i make menuconfig or xconfig, I can select the original "Universal TUN/TAP driver"..But this did not work either... Code: yunus:/usr/src/linux-headers-2.6.32-5-amd64# make xconfig /usr/src/linux-headers-2.6.32-5-common/scripts/Makefile.build:44: /usr/src/linux-headers-2.6.32-5-common/scripts/basic/Makefile: No such file or directory make[3]: *** No rule to make target `/usr/src/linux-headers-2.6.32-5-common/scripts/basic/Makefile'.  Stop. make[2]: *** [scripts_basic] Error 2 make[1]: *** [sub-make] Error 2 make: *** [all] Error 2 yunus:/usr/src/linux-headers-2.6.32-5-amd64# make menuconfig /usr/src/linux-headers-2.6.32-5-common/scripts/Makefile.build:44: /usr/src/linux-headers-2.6.32-5-common/scripts/basic/Makefile: No such file or directory make[3]: *** No rule to make target `/usr/src/linux-headers-2.6.32-5-common/scripts/basic/Makefile'.  Stop. make[2]: *** [scripts_basic] Error 2 make[1]: *** [sub-make] Error 2 make: *** [all] Error 2 I tried reinstalling my kernel, but it did not solve my problem.... Code: aptitude reinstall linux-image-2.6.32-5-amd64 How can I get rid of this modified module from my kernel? Can I reinstall uncustomized kernel? Can I at least select driver for tun by menuconfig or somehow?

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