Fragmentation is a nightmare in a nightmare: we also discovered that IPv6 fragments reassembly (as implemented by major operating systems) is still plagued by the problem of overlapping fragments. Potentially, you can still bypass IDS/IPS using the same techniques from IPv4...
Shameless plug: we will present these results at ESORICS 2023 :-)
Shameless plug: we will present these results at ESORICS 2023 :-)