You might also want to check, whether the docker default subnet ranges do not conflict with your companies subnets.
Probably not related in your current situation, but your current ip 172.26.155.70/20 might conflict with the default cidr ranges docker uses for the user defined bridge networks.
You can list the subnets of the docker networks with a command like in this:
docker inspect --format '{{.Name}}:{{(index .IPAM.Config 0).Subnet}}' $(docker network ls --filter 'driver=bridge' -q)
This topic might be usefull when you need to change the subnet cidrs: https://forums.docker.com/t/docker-change-default-ip-range-for-all-and-new-containers/144474/8