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1 1 Suggestions welcome! I'm moving DHCP and DNS services from a combined router (192.168.0.1) to a separate system (running on 192.168.0.2) with dnsmasq. I want the first system to be the default route and the second system to handle dns. How should I configure dnsmasq for this? So far it works fine for IPv4 all system gets addresses and the correct name server. But when inspecting IPv6 settings in the terminal I see it is not using my internal DNS, but is using the IPv6 addresses of the ISP's DNS servers. How should I configure so the IPv6 addresses are routed via the router and the name-server lookup is directed to my local name-server. The configuration options for v6 and examples I have found so far seem to only be suitable if both router and name-server are running the same machine. Any sugges

1 $begingroup$ Let $K={(1),(1,2),(3,4),(2,4),(1,4),(2,3)}$ is a subgrope of $S_4$ , we want to show that it is a normal subgroup. I know that i have to examine the condition of normality in $S_4$ i.e. for all $gin S_4, g^{-1}Kg=K$ . I think this takes times or I am missing something near. Please give me the right hint. Thank you. Edit: $K = {(1),(12)(34),(13)(24),(14)(23)}.$ group-theory share | cite | improve this question edited Jan 1 at 16:41 Dietrich Burde 81.5k 6 48 106 asked Feb 23 '13 at 15:51