Community discussions

MikroTik App
 
dksoft
Member Candidate
Member Candidate
Topic Author
Posts: 148
Joined: Thu Dec 06, 2012 8:56 am
Location: Germany

Question: Howto get IPv6 DDNS working on 6.43 cloud service

Mon Sep 10, 2018 1:32 pm

Hi,

can please someone point how to configure the /ip cloud service to resolve IPv6 address?

I am running 6.43 on CHR and IPv4 resolves well. IPv6 is learned via DHCPv6 on the PPPoE interface where IPv4 is bound to.

Thanks,
dksoft
 
User avatar
janisk
MikroTik Support
MikroTik Support
Posts: 6263
Joined: Tue Feb 14, 2006 9:46 am
Location: Riga, Latvia

Re: Question: Howto get IPv6 DDNS working on 6.43 cloud service

Mon Sep 10, 2018 3:44 pm

you can check now if your router has updated AAAA entry properly.
 
nescafe2002
Forum Veteran
Forum Veteran
Posts: 897
Joined: Tue Aug 11, 2015 12:46 pm
Location: Netherlands

Re: Question: Howto get IPv6 DDNS working on 6.43 cloud service

Mon Sep 10, 2018 5:01 pm

How do we disable IPv6 in /ip cloud?

Edit: This seems to work well:
/ipv6 firewall address-list
add address=cloud2.mikrotik.com list=cloud
/ipv6 firewall filter
add action=drop chain=output dst-address-list=cloud
 
User avatar
janisk
MikroTik Support
MikroTik Support
Posts: 6263
Joined: Tue Feb 14, 2006 9:46 am
Location: Riga, Latvia

Re: Question: Howto get IPv6 DDNS working on 6.43 cloud service

Tue Sep 11, 2018 10:15 am

for IP Cloud to get your external IPv6 address it has to have a connection to cloud2.mikrotik.com via IPv6.

*) you block in fireall cloud2.mikrotik.com IPv6 addresses (that is not that good, because IPv6 still could be used for DNS requests and ns1 and ns2 for ddns names uses same IP addresses.
*) You block that or you add static IPv4 cloud2.mikrotik.com in '/ip dns static' router will not be able to resolve the IPv6 address and will not be able to connect.
 
nescafe2002
Forum Veteran
Forum Veteran
Posts: 897
Joined: Tue Aug 11, 2015 12:46 pm
Location: Netherlands

Re: Question: Howto get IPv6 DDNS working on 6.43 cloud service

Tue Sep 11, 2018 10:28 am

I am hosting several IPv4-based services behind my MT using mynetname.net as hostname. IPv6 breaks these services.
To restore functionality I have to disable IPv6 Cloud and the posted solution does exactly that.

Edit:
Re-read your answer; you're explaining that mynetname.net DNS lookups over IPv6 will fail.
This would be the case if you have a stand alone dns resolver using root hints which the MT does not.
When using a DNS forwarder, either internally or externally, the output chain will not be hit.
Therefore I don't see any practical objections dropping these requests.

Adding static IPv4 entries for cloud2.mikrotik.com would lead to problems if MT decides to relocate IP Cloud service.
Last edited by nescafe2002 on Tue Sep 11, 2018 11:09 am, edited 2 times in total.
 
dksoft
Member Candidate
Member Candidate
Topic Author
Posts: 148
Joined: Thu Dec 06, 2012 8:56 am
Location: Germany

Re: Question: Howto get IPv6 DDNS working on 6.43 cloud service

Tue Sep 11, 2018 10:57 am

Back to the initial topic that IPv6 is not resolved: it suddenly works.
I don't know why, but the public-address-ipv6 is now displayed and resolved.
It might be solved as I disabled and re-enabled the ip cloud ddns service as recommended in the Wiki.

Anyway, I am happy.

Who is online

Users browsing this forum: CGGXANNX and 41 guests