I suppose, if you want to squeeze it into the definition given in RFC 9293, but that same RFC only uses "fragmentation" to denote "internet fragments" or IP-lev

I suppose, if you want to squeeze it into the definition given in RFC 9293, but that same RFC only uses "fragmentation" to denote "internet fragments" or IP-level fragmentation. You're referring to "segmentation" which is also defined in that RFC. https://www.rfc-editor.org/rfc/rfc9293.html#name-segmentation https://www.rfc-editor.org/rfc/rfc9293.html#name-segmentatio...