Is it possible to filter out all IPv4 traffic to completely isolate a device such that onlyIPv6 traffic is allowed? The goal is to prevent any IPv4 traffic from flowing through a device. If this can be done, can it be configured on a router and switch or just one or the other? Has anyone configured this?
Sorry this is a very old thread, but yes thats very easy when writing access-list use this:
any , any4 , and any6 —
any specifies both IPv4 and IPv6 traffic;
any4 specifies only IPv4 traffic; and
any6 specifies any IPv6 traffic.
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