Every client's network is unique. To allow the agent to be supported in a variety of networks. I would like you to consider the ability to add your own custom FQDN that the roaming client can utilize as an additional heartbeat check. Similar to local domains and local resolvers There are still additional considerations, like if the check to DNSFilter is restricted, there will be a likely hood that the agent can still not filter. Which needs to be considered with this request as well