The DNS uses glue records to allow iterative clients to find the addresses of name servers that are contained within a delegated zone.
Fall colors in Shenandoah National Park, Virginia (© Michael Ver Sprill/Getty Images)
In situ Operations, Administration, and Maintenance (IOAM) records operational and telemetry information in the packet while the packet
In PIM Sparse Mode (PIM-SM) networks, PIM Null-Register messages are sent by the Designated Router (DR) to the Rendezvous Point (RP) to