A lot of requests from 172.18.0.1

Hey,
I installed i have the latest docker version, with the latest pihole for docker. I set it up via docker-compose like said in the docker hub. when booting it up it all works fin but.. i keep getting request from 02:42:DC:4B:9D:A6 (address: 172.18.0.1) which is my docker network that the pihole is on.
I was ignoring and blocking it for a day, however after that my pihole web was not accesable anymore due to the lagg created my the mass requests. it creates a few thousand in a few minutes.