smoke signals is a non-standard extension. however over avian carrier has its own rfc and is entirely legit: https://www.rfc-editor.org/rfc/rfc2549.html https:

smoke signals is a non-standard extension. however over avian carrier has its own rfc and is entirely legit: https://www.rfc-editor.org/rfc/rfc2549.html https://www.rfc-editor.org/rfc/rfc2549.html