Heads Up :
The post you are writing will appear in a public forum. Please ensure all content is appropriate for public consumption. Review the employee guidelines for the community here.
Just came across this post while searching for some info regarding Framed-MTU on 9800:
https://www.cisco.com/c/en/us/td/docs/wireless/controller/9800/17-6/deployment-guide/Configurable_Framed-MTU_on_Cisco_Catalyst_9800.html
Supported from 17.4 code...