In 13be962569d5eaff502dcb257217ef577c98865b, I had to disable hard-linking /var/run/mDNSResponder into container because such link cannot be created anymore since it tries to cross filesystem bounds. We instead need to create our own named pipe inside the container and transfer data between host pipe and container pipe or run mDNSResponder inside container.
In 13be962569d5eaff502dcb257217ef577c98865b, I had to disable hard-linking
/var/run/mDNSResponderinto container because such link cannot be created anymore since it tries to cross filesystem bounds. We instead need to create our own named pipe inside the container and transfer data between host pipe and container pipe or run mDNSResponder inside container.