"Cannot resolve" tag on IPv6-only network?
My probe v1 is on an IPv6-only network with NAT64 and DNS64. In the web UI I see it's tagged with "cannot resolve A" and "cannot resolve AAAA". Are IPv6-only networks supported? Is this because the network doesn't have a DHCP server? Something else?
On 09/02/2019 07:21, Lorenzo Colitti wrote: Hi Lorenzo,
My probe v1 is on an IPv6-only network with NAT64 and DNS64. In the web UI I see it's tagged with "cannot resolve A" and "cannot resolve AAAA".
Are IPv6-only networks supported? Is this because the network doesn't have a DHCP server? Something else?
IPv6-only networks are certainly supported, but if the probe isn't aware of any DNS resolver, then it's not going to be able to do any of its own DNS lookups, and that's why it's been tagged with the "cannot resolve" tags. If you go to the "network" tab of your probe in the Atlas UI, you can define IPv6 resolvers for it. Regards, Anand
On Sat, Feb 9, 2019 at 5:26 PM Anand Buddhdev <anandb@ripe.net> wrote:
My probe v1 is on an IPv6-only network with NAT64 and DNS64. In the web UI I see it's tagged with "cannot resolve A" and "cannot resolve AAAA".
Are IPv6-only networks supported? Is this because the network doesn't have a DHCP server? Something else?
IPv6-only networks are certainly supported, but if the probe isn't aware of any DNS resolver, then it's not going to be able to do any of its own DNS lookups, and that's why it's been tagged with the "cannot resolve" tags.
Hmm. The network announces IPv6 DNS servers via RDNSS, and as far as I know, they work. Does the probe support RDNSS?
On Sat, Feb 9, 2019 at 7:47 PM Lorenzo Colitti <lorenzo@google.com> wrote:
IPv6-only networks are certainly supported, but if the probe isn't aware
of any DNS resolver, then it's not going to be able to do any of its own DNS lookups, and that's why it's been tagged with the "cannot resolve" tags.
Hmm. The network announces IPv6 DNS servers via RDNSS, and as far as I know, they work. Does the probe support RDNSS?
I turned on IPv4 on that subnet and things started working again. That makes me think that the probe doesn't support RDNSS. Can anyone confirm or deny? Should I file a bug?
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Anand Buddhdev -
Lorenzo Colitti