otDnsAddressCallback

Pointer is called when a DNS response is received for an address resolution query. Within this callback the user can use `otDnsAddressResponseGet{Item}()` functions along with the @p aResponse pointer to get more info about the response. The @p aResponse pointer can only be used within this callback and after returning from this function it will not stay valid, so the user MUST NOT retain the @p aResponse pointer for later use. The @p aError can have the following: - OT_ERROR_NONE A response was received successfully. - OT_ERROR_ABORT A DNS transaction was aborted by stack. - OT_ERROR_RESPONSE_TIMEOUT No DNS response has been received within timeout. If the server rejects the address resolution request the error code from server is mapped as follow: - (0) NOERROR Success (no error condition) -> OT_ERROR_NONE - (1) FORMERR Server unable to interpret due to format error -> OT_ERROR_PARSE - (2) SERVFAIL Server encountered an internal failure -> OT_ERROR_FAILED - (3) NXDOMAIN Name that ought to exist, does not exist -> OT_ERROR_NOT_FOUND - (4) NOTIMP Server does not support the query type (OpCode) -> OT_ERROR_NOT_IMPLEMENTED - (5) REFUSED Server refused for policy/security reasons -> OT_ERROR_SECURITY - (6) YXDOMAIN Some name that ought not to exist, does exist -> OT_ERROR_DUPLICATED - (7) YXRRSET Some RRset that ought not to exist, does exist -> OT_ERROR_DUPLICATED - (8) NXRRSET Some RRset that ought to exist, does not exist -> OT_ERROR_NOT_FOUND - (9) NOTAUTH Service is not authoritative for zone -> OT_ERROR_SECURITY - (10) NOTZONE A name is not in the zone -> OT_ERROR_PARSE - (20) BADNAME Bad name -> OT_ERROR_PARSE - (21) BADALG Bad algorithm -> OT_ERROR_SECURITY - (22) BADTRUN Bad truncation -> OT_ERROR_PARSE - Other response codes -> OT_ERROR_FAILED