Hi All -
Got an interesting requirement that (for something seemingly simple) has been remarkably challenging to locate a solution for...
Having a problem with random IPv6 traffic showing up on the enterprise LAN from time to time and freaking out certain network-connected devices that don't know how to process it (CPU 100%, etc.). So I'm looking for a way to filter/drop that IPv6 traffic at the network edge. I can certainly set the core 6500's not route (or even ignore) IPv6, but that still doesn't stop it from running around WITHIN a VLAN.
Is there a way that a IPv4-only device can identify IPv6 traffic (by a protocol type code or something along that line) so that it can be filtered/dropped before it even makes it onto the backbone?
Thanks in advance!