Hello everybody, I'm customizing Knoppix following the official wiki. To have network access in the chrooted environment I mounted /proc. Then when I exited the chrooted environment I forgot to unmount /proc. What happens? I ask this because the wiki says:

If you mounted it, you'll need to unmount /proc - very important!

When I chrooted again I wrote mount and /proc was still mounted. Then I wrote umount /proc.
I left chroot and then chrooted again. I wrote mount and nothing was mounted...
BUT when I tried to ping google it worked!!!

Please, tell me what I have to do and if there is a way to recover the work I've done...