It is now possible to run only bin/manage_tuntap script via sudo, not /bin/sh.
This is very important if netkit is used on public computers. Starting /bin/sh via sudo is rather bad idea.

Now your /etc/sudoers could contain just a line like this:
student ALL=NOPASSWD: /usr/local/netkit/bin/manage_tuntap

This commit fixes the https://github.com/maxonthegit/netkit-core/issues/17 issue.
Merge branch 'sudo' of github.com:sv75/netkit-core