https://community.sophos.com/utm-firewall/f/management-networking-logging-and-reporting/11162/ipv6-filtering---how-do-you-do-itIPv6 offers DHCPv6 and/or SLAAC. If you use DHCPv6, you can assign a single, static, IPv6 IP address to a client and then write firewall rules based on that mapping. But then devices like Android don&#39;t support DHCPv6 so that&#39;s not an option if you haveen-USTelligent Community 12https://community.sophos.com/thread/289599?ContentTypeID=1Mon, 07 Mar 2016 05:05:54 GMT4be5eb7d-caa4-4ff5-8e60-8f9463545a35:82655ee7-89a7-42fa-a63d-1f5bbb5815b0dms<p>Being an avid supporter of SLAAC on my network, I&#39;ve spent the last 3 months trying to work out how to allow reverse DNS lookups for clients that are using SLAAC. It appears that only AllKnowingDNS can currently do the job - but that will need configuring as a separate DNS server to my UTM, taking yet another function away from the UTM. What&#39;s the thinking in Sophos-land to integrate better control of SLAAC in the UTM?</p><div style="clear:both;"></div>