Hostname not returned in IPv6 DNS query responses

[Patrick9876]

ASUS RT-AC86U, Merlin 384.13_2
IPv4 address 192.168.1.1
IPv6 address 2601:602:9200:2302::1

On Windows, if I issue an NSLOOKUP directed to 192.168.1.1, my AC86U includes its hostname in the reply.

If I issue an NSLOOKUP directed to 2601:602:9200:2302::1, my AC86U includes "No such name" in the reply. (I does return the address of queried resource name; it's just its own name that is unknown.)

In a Wireshark trace I see the "No such name". Windows translates it into "Unknown ":

C:\Users\Patrick>nslookup ncix0001
Server: UnKnown
Address: 2601:602:9200:2302::1

Name: ncix0001.OF-LAN
Address: 192.168.1.81


C:\Users\Patrick>nslookup ncix0001 192.168.1.1
Server: RT-AC86U-1350.OF-LAN
Address: 192.168.1.1

Name: ncix0001.OF-LAN
Address: 192.168.1.81​

This is obviously not a very big deal, but if it's intentional I'd like to understand the reasoning.

 

[dave14305]

Does this help?

https://www.snbforums.com/threads/router-ipv6-hosts-entries.60421/

 

[Poul Bak]

Note that you can't use the ipv6 address to access the router's web page!

 

[Patrick9876]

Does this help?

https://www.snbforums.com/threads/router-ipv6-hosts-entries.60421/

Yes. Thank you. I know nothing about scritping in the router, but if I get brave enough I'll try it.

Note that you can't use the ipv6 address to access the router's web page!

Interesting that it's allowed for the DNS server but not the HTTP server. It won't effect me since I have no need to use the IPv6 address.

 

[Neil62]

ASUS RT-AC86U, Merlin 384.13_2
IPv4 address 192.168.1.1
IPv6 address 2601:602:9200:2302::1

On Windows, if I issue an NSLOOKUP directed to 192.168.1.1, my AC86U includes its hostname in the reply.

If I issue an NSLOOKUP directed to 2601:602:9200:2302::1, my AC86U includes "No such name" in the reply. (I does return the address of queried resource name; it's just its own name that is unknown.)

In a Wireshark trace I see the "No such name". Windows translates it into "Unknown ":

C:\Users\Patrick>nslookup ncix0001
Server: UnKnown
Address: 2601:602:9200:2302::1

Name: ncix0001.OF-LAN
Address: 192.168.1.81


C:\Users\Patrick>nslookup ncix0001 192.168.1.1
Server: RT-AC86U-1350.OF-LAN
Address: 192.168.1.1

Name: ncix0001.OF-LAN
Address: 192.168.1.81​

This is obviously not a very big deal, but if it's intentional I'd like to understand the reasoning.

Is that firmware version you quoted by Merlin even available for the 86U?

Sent from my SM-G955F using Tapatalk

 

[Patrick9876]

Is that firmware version you quoted by Merlin even available for the 86U?

Probably not - it was a typo.
Should have been 384.14_2.