[Dnsmasq-discuss] prohibit ipv6 for some clients

[Александр]

 Hello,

Can you help me with subj configuration...

I have configuration like this
=========Beginning of the citation==============
expand-hosts
port=0
server=127.0.0.1
interface=br0
interface=tap1
interface=tap2
interface=tap3
log-dhcp

rebind-localhost-ok

dhcp-authoritative
enable-ra


dhcp-range=::1, ::FF, constructor:br*, ra-names, 64, 12h
dhcp-range=::1, ::FF, constructor:tap*, ra-names, 64, 12h


filterwin2k
=========The end of the citation================

it is used to announce ipv6....

I'd like not to annouce ipv6 for known clients...
How it can be done?
is it possible to configure smth inside dnsmasq config, or it can be done 
using iptables?

thanks in advance,
Alex.