Questions for a dhclient using DHCPv6

[k.fujinaga]

HI, all.

Does anyone know any ideas to solve problems?
# My English is not good, so please be patient to read following questions.

- Question 1.
Can the dhclient set IPaddress to ethernet interface by using IA_PD mode?

To get a IPv6 addresses, I tried to use the dhclient (isc-dhcp 4.2.4) on 
ubuntsu 11.04.
In my network, the DHCPv6 server requires IPv6 prefix delegation 
mode(IA_PD).
So, I executed the dhclient as follows.

- command line
# ./dhclient -d -6 -P -D LL
              -cf /etc/dhcp/dhclient.conf
              -lf /var/tmp/lease_file
              -pf /var/tmp/pid_file
              -sf /var/tmp/dhcp-4.2.4/client/scripts/linux
              eth0
             # I used 4.2.4's script file.

- config file (/etc/dhcp/dhclient.conf)
send dhcp6.reconf-accept;

request dhcp6.vendor-opts,
         dhcp6.sip-servers-addresses,
         dhcp6.name-servers,
         dhcp6.domain-search,
         dhcp6.sntp-servers;

The dhclient dhclient could communicate to DHCPv6 server, and got IA 
prefix. But, the dhclient didn't set IP address to ethernet interface(eth0).

If the "-P" option is used, the dhclient set an environment variable 
"new_ip6_prefix" for the script file.
But if "new_ip6_prefix" is defined, the 4.2.4's script file 
(client/scripts/linux) do nothing as follows.

 > # client/scripts/linux line.263.
 > if [ x$reason = xBOUND6 ] ; then
 >   if [ x${new_ip6_address} = x ] || [ x${new_ip6_prefixlen} = x ] ; then
 >     exit_with_hooks 2;
 > fi

Does anyone know how to solve this problem??

- Question 2.

In my network, the DHCP server requires "Option Request" option for 
DHCPv6 messages except SOLICIT message.
If the config setting is follows, the dhclient set "Option Request" 
option to all DHCPv6 message.

- config file (/etc/dhcp/dhclient.conf)
request dhcp6.vendor-opts,
         dhcp6.sip-servers-addresses,
         dhcp6.name-servers,
         dhcp6.domain-search,
         dhcp6.sntp-servers;


Please teach me the config setting to select target massage.

Best regards
Katsuhisa Fujinaga


(2012/06/14 9:55), k.fujinaga wrote:
> Sorry.
>
> Because an indent collapsed, it is hard to read the previous email.
> So, I re-send fixed email.
>
> ---
> Hi all,
>
> I have two questions for a dhclient using DHCPv6 (dhcp-4.2.4 on ubuntsu
> 11.04).
> Does anyone know answer of these questions.
>
> -- Q1. How can dhclient set IP address to ethernet using IA_PD mode?
>
> I tried to get IP address using IA_PD mode.
> The dhclient could communicate to DHCPv6 server, and got IA prefix.
> But, the dhclient didn't set IP address to ethernet.
> # So, ifconfig's outputs didn't change.
>
> The dhclient send/received solicit, advertise, request, reply messages.
> All message was correct, and the dhclient outputs lease file as follows.
>
> - lease file -
> default-duid "\000\003\000\001\000!\206+\0039"
> lease6 {
> interfase "eth0"
> ia-pd XX:XX:XX:XX { # sorry. address is masked.
> starts 1339469866;
> renew 7200;
> rebind 10800;
> iaprefix 2408:XXX:XXXX:XXX::/56 { # sorry. prefix is masked.
> starts 1339469866;
> preferred-life 12600;
> max-life 14400;
> }
> option dhcp6.client-id XXXXXXXXXXXXX; # masked.
> option dhcp6.server-id XXXXXXXXXXXXX; # masked.
> ...
> }
> --
>
> So, the dhclient could get IA prefix completely.
>
> The dhclient set environment variable "new_ip6_prefix" for script file.
> If "new_ip6_prefix" is defined, 4.2.4's script file
> (client/scripts/linux) do nothing.
>
>  > # client/scripts/linux line.263.
>  > if [ x$reason = xBOUND6 ] ; then
>  > if [ x${new_ip6_address} = x ] || [ x${new_ip6_prefixlen} = x ] ; then
>  > exit_with_hooks 2;
>  > fi
> How can the dhclient set IP address to ethernet using IA_PD mode?
>
> Finally, I write more information.
> - command option
> # ./dhclient -d -6 -P -D LL
> -cf /etc/dhcp/dhclient.conf
> -lf /var/tmp/lease_file
> -pf /var/tmp/pid_file
> -sf /var/tmp/dhcp-4.2.4/client/scripts/linux
> eth0
> # I used 4.2.4's script file.
>
> - config file (/etc/dhcp/dhclient.conf)
> send dhcp6.reconf-accept;
>
> request dhcp6.vendor-opts,
> dhcp6.sip-servers-addresses,
> dhcp6.name-servers,
> dhcp6.domain-search,
> dhcp6.sntp-servers;
> --
>
> -- Q2. How can I select target message-type that is added IPv6 options?
>
> I want to set "Option Request" option to DHCPv6 messages except SOLICIT.
> If the dhclient use follow config file, the dhclient set "Option
> Request" to all message.
> Can the dhclient select target message?
>
> - config file (/etc/dhcp/dhclient.conf)
> request dhcp6.vendor-opts,
> dhcp6.sip-servers-addresses,
> dhcp6.name-servers,
> dhcp6.domain-search,
> dhcp6.sntp-servers;
> --
>
> Thanks and best regards.
>
> _______________________________________________
> dhcp-users mailing list
> dhcp-users at lists.isc.org
> https://lists.isc.org/mailman/listinfo/dhcp-users


-- 
Katsuhisa Fujinaga     k.fujinaga at sdy.co.jp
SDY Corporation.       TEL:+81-47-401-7210 FAX:+81-47-401-7207