Patent ID: 11888828
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. An intermediate domain name system, DNS, resolver node for secure DNS queries, the intermediate DNS resolver node (resolver 1) comprising:
a processing circuitry; and
a computer storage medium storing instructions that, when executed by the processing circuitry, cause the intermediate DNS resolver node to:
receive a DNS message with an encrypted DNS query from a DNS client, together with an internet protocol, IP, address for an additional DNS resolver;
store a query identity, ID, of and an IP address to the DNS client; and
send a DNS message with the received encrypted DNS query to the additional DNS resolver with the stored IP address to and the ID of the DNS client replaced with a query ID of the intermediate DNS resolver and an IP address thereto; and
the DNS message having an OPCODE type indicating an enveloped DNS query.