DSOTYPENI
DSO-TYPE Not Implemented
DSOTYPENI (11) is returned when a DNS Stateful Operations (DSO) message references a DSO-TYPE that the server does not implement. DNS Stateful Operations (RFC 8490) is a TLS-based long-lived DNS session protocol. DSOTYPENI is specific to DSO sessions.
RCODE
11
Name
DSOTYPENI
Standard
RFC 8490
Description
DNS Stateful Operations (DSO, RFC 8490) establishes long-lived TCP/TLS connections between DNS clients and servers for push subscriptions and keepalives. DSO defines message types (DSO-TYPEs) for different operations. If a client sends a DSO message with a DSO-TYPE the server does not recognize or implement, the server returns DSOTYPENI. This is analogous to NOTIMP but specific to the DSO protocol layer. DSO is used in DNS Push Notifications (RFC 8765) for real-time DNS change notification.
Common Causes
- –DSO message with unrecognized DSO-TYPE value
- –Server does not implement the requested DSO operation
- –Client using newer DSO-TYPE not supported by server version