I have a docker machine. There are lots of centos containers on the docker. I wanna block an ip from iptables (on the docker machine ). Then, the centos containers will be blocked.
I try these but don't work
iptables -A DOCKER-USER -s 192.168.0.210 -j DROP
and
iptables -A INPUT -s 192.168.0.210 -j REJECT
how can I resolve this problem?