The DNS server considers the interface tags when resolving names learned via DHCP, i.e. the only names to be resolved are those which were learned from a network with the same interface tag as the requesting computer. If the request arrives from an untagged network, then all names are resolved, including those that were learned via tagged networks. Similarly, all names that were learned from untagged networks are visible for tagged networks.
Names learned from relay agents are handled as though they were learned from an untagged network, i.e. these names are visible to all networks.
