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>Chapter 21. Hints for IPv6-enabled daemons</TD
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>21.5. Dynamic Host Configuration v6 Server (dhcp6s)</H1
><P
>DHCPv6 can be used for stateful configurations. The daemon itself need not necessary run on the Linux default IPv6 gateway router. </P
><P
>You can specify more information than by using radvd. The are most similar to IPv4 DHCP server.</P
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>After a proper configuration, the daemon reacts on received ICMPv6 multicast packets sent by a client to address ff02::16</P
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>21.5.1. Configuration of the DHCPv6 server (dhcp6s)</H2
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>21.5.1.1. Simple configuration</H3
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>dhcp6s's config file is normally /etc/dhcp6s.conf. An simple example looks like following:</P
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>interface eth0 {
server-preference 255;
renew-time 60;
rebind-time 90;
prefer-life-time 130;
valid-life-time 200;
allow rapid-commit;
option dns_servers 2001:db8:0:f101::1 sub.domain.example;
link AAA {
range 2001:db8:0:f101::1000 to 2001:db8:0:f101::ffff/64;
prefix 2001:db8:0:f101::/64;
};
};</PRE
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>21.5.2. Configuration of the DHCPv6 client (dhcp6c)</H2
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>21.5.2.1. Simple configuration</H3
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>dhcp6c's config file is normally /etc/dhcp6c.conf. An simple example looks like following:</P
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>interface eth0 {
send rapid-commit;
request domain-name-servers;
}; </PRE
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>21.5.3. Usage</H2
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>21.5.3.1. dhcpv6_server</H3
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>Start server, e.g.</P
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># service dhcp6s start</PRE
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>21.5.3.2. dhcpv6_client</H3
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>Start client in foreground, e.g.</P
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># # dhcp6c -f eth0</PRE
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>21.5.4. Debugging</H2
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>21.5.4.1. dhcpv6_server</H3
><P
>The server has one foreground and two debug toggles (both should be used for debugging), here is an example:</P
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># dhcp6s -d -D -f eth0</PRE
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>21.5.4.2. dhcpv6_client</H3
><P
>The client has one foreground and two debug toggles, here is an example:</P
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># dhcp6c -d -f eth0
Oct/03/2005 17:18:16 dhcpv6 doesn't support hardware type 776
Oct/03/2005 17:18:16 doesn't support sit0 address family 0
Oct/03/2005 17:18:16 netlink_recv_rtgenmsg error
Oct/03/2005 17:18:16 netlink_recv_rtgenmsg error
Oct/03/2005 17:18:17 status code for this address is: success
Oct/03/2005 17:18:17 status code: success
Oct/03/2005 17:18:17 netlink_recv_rtgenmsg error
Oct/03/2005 17:18:17 netlink_recv_rtgenmsg error
Oct/03/2005 17:18:17 assigned address 2001:db8:0:f101::1002 prefix len is not in any RAs prefix length using 64 bit instead
Oct/03/2005 17:18:17 renew time 60, rebind time 9</PRE
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>Note that the netlink error messages have no impact.</P
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