IPV6 DNS overlaps my IPV4 DHCP DNS servers

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apinho

September 14, 2020 21:12

Hi everyone,

 

I have two routers at home.

One is from my internet provider, and in that router I cannot change IPV6 cofniguration, or default DNS SERVER addresses. 

The other one is a personal one, to which I have full access.

SInce I couldn't change DNS adresses on my ProviderRouter, I deactivated DHCP on that server, and activated DHCP on my PersonalRouter, with OPENDNS DNS servers addresses.

So, my client have a configuration such as :

IPv4 Address. . . . . . . . . . . : 192.168.1.184
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.254 ->ProviderRouter
DHCP Server . . . . . . . . . . . : 192.168.1.240 ->PersonalROuter
DNS Servers . . . . . . . . . . . : 208.67.222.222
                                              208.67.222.220

It works fine, as long as no one uses IPv6. If one of my clients activates IPv6 :

IPv6 Address. . . . . . . . . . . : 2001:8a0:f36b:8d00:cd54:fb16:bbf3:e86f(Preferred)
Temporary IPv6 Address. . . . . . : 2001:8a0:f36b:8d00:64c3:1222:b31e:32f6(Preferred)
Link-local IPv6 Address . . . . . : fe80::cd54:fb16:bbf3:e86f%17(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.184
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : fe80::206:91ff:fe8b:249f%17
192.168.1.254
DHCP Server . . . . . . . . . . . : 192.168.1.240
DNS Servers . . . . . . . . . . . : 2001:8a0:f36b:8d00::1
                                             208.67.222.222
                                             208.67.222.220

And WebFiltering doesn't work anymore...

 

What can I do ?

0

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  rotblitz September 14, 2020 21:19

  Configure your IPv6 settings with DNS server addresses from the following list:
  ::ffff:d043:dede ::ffff:d043:dcdc ::ffff:d043:dedc ::ffff:d043:dcde

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  apinho September 14, 2020 21:26

  Do you mean, on my PersonalRouter, where I have my DHCP server ? I have no options there to input DNS SERVER adresses in IPv6 format, only in IPV4...

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  rotblitz September 15, 2020 11:19

  What a pity! And what a lousy router! Your other options are to disable IPv6 altogether or to configure DNSv6 on the end user devices.

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