To send an IPv6 DNS query over AnyConnect wouldn't the client have to have an IPv6 DNS server configured, and for that IPv6 subnet to be advertised over AnyConnect (assuming you are running split-tunnel - if you are running full tunnel then I guess you should expect "all" traffic to be routed over AnyConnect).
Yep we are running split tunnel. We don’t want to send the ipv6 dns over the client. It should really remain local which is why we have tried to turn off ipv6 on the client but it does not seam to work.
So over an hour on the phone with Meraki and no help at all.
Has anyone else used Any connect on a linux machine? Basically, as soon as you connect it add a load of routes to your route table sending IPV6 to the Any connect interface.
That should not be happening as it should have no impact on IPV6. It looks like the traffic does not get to the MX so Meraki are easing their hands with it saying they can prove it does not get to the device.