Problem with dhcpd6 configuration

[scott_stone at trendmicro.com]

I've turned off the accept-router-advertisements feature so now the 'global dynamic' address is no longer an issue, but I'm still getting an error saying it has no subnet6 matching the link local address.

I've even added:

subnet6 fe80::/64 {
	default-lease-time 3600;
}

and I'm still getting that error.  yes it is using -6 (using the RHEL6 dhcpd6 init script actually), and "service dhcpd6 configtest" returns "OK" ... it's just "not configured to listen on any interfaces," or so it thinks.. since it doesn't match the fe80 link local address to fe80::/64 for some reason..?

====================
Scott Stone <scott_stone at trendmicro.com>
Manager, DCS-RD
Trend Micro, Inc. http://www.trendmicro.com


-----Original Message-----
From: dhcp-users-bounces+scott_stone=trendmicro.com at lists.isc.org [mailto:dhcp-users-bounces+scott_stone=trendmicro.com at lists.isc.org] On Behalf Of Simon Hobson
Sent: Monday, October 03, 2011 2:33 PM
To: Users of ISC DHCP
Subject: Re: Problem with dhcpd6 configuration

scott_stone at trendmicro.com wrote:

>Here's the interface configuration (the 'fffa' and 'fffb' addresses 
>were added by us, the 'scope link' and 'scope global dynamic' seem 
>to be getting auto-set).
>
>6: eth4: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
>     link/ether 00:26:9e:58:48:30 brd ff:ff:ff:ff:ff:ff
>     inet 10.31.55.241/24 brd 10.31.55.255 scope global eth4
>     inet 10.31.55.244/24 brd 10.31.55.255 scope global secondary eth4:0
>     inet6 2620:101:4037:3b05:226:9eff:fe58:4830/64 scope global dynamic
>        valid_lft 2591861sec preferred_lft 604661sec
>     inet6 2620:101:4037:3b05:fffa::1/64 scope global
>        valid_lft forever preferred_lft forever
>     inet6 2620:101:4037:3b05:fffb::1/64 scope global
>        valid_lft forever preferred_lft forever
>     inet6 fe80::226:9eff:fe58:4830/64 scope link
>        valid_lft forever preferred_lft forever

At a rough guess, you've a router advertising routes and the server 
is self-configuring an interface - which is normal. 
226:9eff:fe58:4830 is a self assigned local part derived from the MAC 
address 00:26:9e:58:48:30 with a bit flipped and ff:fe stuck in the 
middle - you see the same with the link-local address (fe80:: prefix) 
which is always created on IPv6 interface.

Can't help with the rest of the problem though - you are starting the 
daemon with the "use IPv6" option aren't you ?

-- 
Simon Hobson

Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
author Gladys Hobson. Novels - poetry - short stories - ideal as
Christmas stocking fillers. Some available as e-books.
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