DHCPv6: send_packet6: Invalid argument

[Rommel S. Laranjo]

Hello,

I need help on getting ISC dhcpv6 working. I have manage to get it 
running but after it recieved a Solicit message from a client, it could 
not respond with and Advertise message.

This is the debug output:
# dhcpd -6 -d -cf /usr/local/etc/dhcpd.conf em1
Internet Systems Consortium DHCP Server 4.0.0a1
Copyright 2004-2007 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/
Wrote 0 leases to leases file.
Listening on Socket/em1/2001:db8:1987:2fff::/64
Sending on   Socket/em1/2001:db8:1987:2fff::/64
Solicit message from fe80::20c:29ff:fecf:3f22 port 546, transaction ID 
0x6430BE00
Sending Advertise to fe80::20c:29ff:fecf:3f22 port 546
send_packet6: Invalid argument
dhcpv6: send_packet6() sent -1 of 84 bytes
Solicit message from fe80::20c:29ff:fecf:3f22 port 546, transaction ID 
0x6430BE00
Sending Advertise to fe80::20c:29ff:fecf:3f22 port 546
send_packet6: Invalid argument
dhcpv6: send_packet6() sent -1 of 84 bytes
Solicit message from fe80::20c:29ff:fecf:3f22 port 546, transaction ID 
0x6430BE00
Sending Advertise to fe80::20c:29ff:fecf:3f22 port 546
send_packet6: Invalid argument
dhcpv6: send_packet6() sent -1 of 84 bytes
^C

My dhcpd.conf:

# cat /usr/local/etc/dhcpd.conf
authoritative;
ddns-updates on;
ddns-update-style interim;
do-forward-updates on;

#Subnet of DHCP Server
subnet6 2001:db8:1987:2fff::/64 {
    range6 2001:db8:1987:2fff:ffff:ffff:ffff:8a0/124;
}

Thanks,

Rommel