[WLANware] Default DNS problems in recent Freifunk

[Ufo]

Marco Tedaldi schrieb:
> wulf wrote:
>>
>>     212... since longer time
>>     195.50.140.250 died Thursday
>>
>> Best wishes Wulf++    
> 
> How about some firewall-rules on the gateway-routers, to redirect the 
> DNS-traffic to still working servers? Just as a quick and dirty 
> workaround, to get the users online again.
> 

yes, of course.
some weeks before we had a similiar problem in leipzig.
f.i. if 192.168.2.2 is a working DNS, you could use this ( at 
/etc/local.fw) at the gateway:

iptables -t nat -I PREROUTING -d 217.146.139.5 -p udp --dport 53 -j DNAT 
--to 192.168.2.2:53