Lighttpd

Hi !

I am using lighty for a while but I installed a new box with a valid IPv6 configuration. The box has several IPv4 addresses and several IPv6 addresses as well. Another webserver is listening on a specific address (Apache+SVN actually).
The OS is Gentoo and lighty is the last available via portage (1.4.23) and I would like to bind lighty on two specific IP addresses for my virtual hosts :
- 91.121.43.249
- 2001:41D0:1:F3bc::3

In the config file, I'am using server.bind and server.use-ipv6 but lighty could not start :

/etc/init.d/lighttpd start
 * Starting lighttpd ...
2009-11-08 00:53:22: (network.c.197) getaddrinfo failed:  Address family for hostname not supported ' 91.121.43.249 '

My /etc/conf.d/net :

config_eth0=( "91.121.178.188 netmask 255.255.255.0" 
            "91.121.43.242 netmask 255.255.255.255" 
            "91.121.43.249 netmask 255.255.255.255" 
            "2001:41D0:1:F3bc::1/56" 
            "2001:41D0:1:F3bc::2/56" 
            "2001:41D0:1:F3bc::3/56" 

A part of lighttpd.conf :

[...]
server.port = 80
server.bind = "91.121.43.249" 

server.event-handler = "linux-sysepoll" 
server.use-ipv6 = "enable" 

$HTTP["host"] =~ "<something like www.example.com, IPv4 and IPv6 addresses>" {
    server.document-root = "..." 
}

$SERVER["socket"] == "[2001:41d0:0001:f3bc::3]:80" {
    server.document-root  = var.basedir + "/htdocs" 
    accesslog.filename    = "/var/log/lighttpd/ipv6.access.log" 
}

[...]

What I am doing wrong ?

Just in case :
www-servers/lighttpd-1.4.23 (uses: bzip2 fastcgi gdbm ipv6 ldap* lua memcache mysql pcre php ssl webdav xattr)
gentoo arch : amd64 (Intel(R) Core(TM)2 Duo CPU)
gcc : 4.3.4
Kernel : Linux 2.6.31.5-xxxx-std-ipv6-64