I try AND set up the DHCPv6 in debian.
someone who can explain what this is.

who mac will be used here. the client his OR her eth0 mac asdresse?

host myrouter {
    duid 00:11:22:33:44:55;
    prefix 2001:470:1f02::/48 infinity; what is this? i can i use "prefix 2001:470:1f09:432::/64 infinity;"?
};