Don't forget about pigeon packets. https://www.rfc-editor.org/rfc/rfc2549
Seems to be RFC 1149, btw, (what you linked is about Pigeon QoS.)
Somwhere after DNS IP and SMTP, but still before HTTP(1.0).
Seems to be RFC 1149, btw, (what you linked is about Pigeon QoS.)
Somwhere after DNS IP and SMTP, but still before HTTP(1.0).