Hiya, you may want to forbid the creation of interfaces whose name is one of the special files in /proc/net and /proc/sys.
I can see some characters (like space, tab, newline, slash, dot...) are alread forbidden in interface names (EINVAL), but one can do for instance: sudo ip link add link eth0 all type vlan id 2 sudo ip link add link eth0 default type vlan id 3 sudo ip link add link eth0 config type vlan id 4 Interestingly, after you add a "all" or "default", the corresponding /proc/sys/net/ipv[46]/conf/(all|default) become empty, and remain so even after you've removed the interface. Adding an interface called "config" masks /proc/net/vlan/config (tested with 3.14-1-amd64 on debian) -- Stephane -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
