The mystery is at least partially solved. It looks like I'd somehow enabled Remote Routing and Access services within Windows Home Server for VPN access. It looks like it tries to grab a few addresses for potential VPN clients from a DHCP server, that's why I was seeing 'RRAS.Micrsoft' as a user class for the extra requests. With RRAS disabled no extra DHCPv4 requests are received which at least removed some of the lease duplication/abandonment.
It also appears to have solved the DHCPv6 behaviour too, with the server now getting the DHCPv6 address assigned by the dhcp-hosts configuration line. Why that should be is also a mystery to me. Oh well, posted here just in case someone else falls into a similar trap :-) Kevin _______________________________________________ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
