Help needed with group setting

[kjbox]

Hi, I have installed and configured SUN xVM VirtualBox with the help of this great HowTo:

I have got as far as Step 3 but when I attempt to start my Virtual Machine I get the following error message:

Failed to open '/dev/net/tun' for read/write access. Please check the permissions of that node. Either run 'chmod 0666 /dev/net/tun' or change the group of that node and make yourself a member of that group. Make sure that these changes are permanent, especially if you are using udev.

I have checked the permissions for /dev/net/tun and found: 'Owner: root' and 'Group: root'.

I cannot change the the group, and going to Users and Groups then adding my username to root group still gives the same error on retry.

Any help would be greatly appreciated.

Thanks in advance

[Iowan]

I cannot change the the group

You tried sudo chgrp mygroup /dev/net/tun (mygroup being YOUR group, of course)? The group existed already? If not, check man addgroup - it has better explanation of options - even for adduser.

BTW, your link didn't get attached.

[kjbox]

Thanks Iowan, that got it sorted