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 From:  Roberto Greiner <mrgreiner at gmail dot com>
 To:  m0n0wall at lists dot m0n0 dot ch
 Subject:  Re: [m0n0wall] IPv6, DHCP and DNS
 Date:  Thu, 29 Jul 2010 12:17:19 -0300

I´ve made a few more tests, and identified the following:

According to what written in the DHCP server page, "**The DNS servers 
entered in System: General setup <> 
(or the DNS forwarder <>, if 
enabled) will be assigned to clients by the DHCP server". The problem 
is, I have my IPv6 DNS addresses (first one is IPv4, second and third 
are IPv6) set in the DNS servers field of the System: General Setup 
page, but the client behind Monowall is not receiving those addresses.

To verify if the DNSs are IPv6 reachable, I used the comand "host -6 
<name> <DNS IPv6 address>", and it worked fine. "host -6 <name>" died 
with a timeout.

I also tried removing all IPv4 DNS from the System: General setup page, 
leaving only IPv6 addresses. After a DHCP renew, the client still solves 
names only via IPv4, using the Monowall IPv4 LAN address.  Forcing the 
IPv6 DNS address in the "host -9 <name> <dns server>" command works, 
using both the IPv6 LAN Monowall address and the also directly the DNS 

So, everything is indicating to me that there is a bug in the IPv6 dhcp 
code that is not forwarding IPv6 DNS addresses.


On 27/07/2010 15:16, Roberto Greiner wrote:
>  Hi,
> I´m doing some tests with enabling IPv6 on my monowall 1.3 box, and 
> have most figured and working, but one point I didn´t figure out yet.
> I would like to make monowall to give (via DHCP) to the clients also 
> the IPv6 DNS address, but couldn´t find out how. Is there one option 
> for this? So far, with my current configuration, the clients are 
> receiving only the IPv4 DNS address, so all the DNS traffic is still 
> running on IPv4 instead of IPv6. Any ideas on how/where to set this?
> Thank you,
> Roberto Greiner

                 Marcos Roberto Greiner

    Os otimistas acham que estamos no melhor dos mundos
     Os pessimistas tem medo de que isto seja verdade
                                   James Branch Cabell