I've Debian Squeeze running and setup a chroot environment (/jail) with debootstrap.
As seen in a tutorial, I mounted the following:
proc on /jail/proc type proc (rw)
devpts on /jail/dev/pts type devpts (rw)
Within the jail, i've running an additional sshd on a different port as the "parent" system.
So far, all is working fine and as expected.
But I just noticed, that i am able to change the host IP address from within the jail. Is this a normal behaviour? I tought, that the chrooted environment cannot change things on the "real" system? But after changing ip address and running
/etc/init.d/networking restart
the system was only reachable via the new ip address.
Please can someone explain, why this behaves like it does? Is there a way to prevent this? So that everything within the jail, "stays in the jail"
Thank you very much in advance.
Casper