The master thesis can be found here: http://hdl.handle.net/2268.2/13211.
vpp_21.06-rc0~374-g452cd7e3b_ioam.patch contains a patch that can be applied to VPP.
The patch must be applied to version 21.06-rc0~374-g452cd7e3b (commit ID: 452cd7e3bee6a28b40949dfeed9f87835551a7cc).