[adding netdev] On 07/23/2014 04:33 AM, Stephane Chazelas wrote: > 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) >
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