5 Čen
2026
5 Čen
'26
17:53
Hi all
I am having trouble forwarding a subdomain since I upgraded to the latest
knot.
For a couple of years I have been running a custom DNS server under
dynamic.estada.ch that the clients find via my regular infrastructure.
On my primary zone I have these records, but knot appears to answer weirdly:
*estada.ch.zone*
dynamic.estada.ch. 3600 A 185.194.239.135
dynamic.estada.ch. 3600 AAAA 2a0a:51c0::12b
dynamic.estada.ch. 3600 NS dynamic.estada.ch.
kdig AAAA dynamic.estada.ch @ns1.estada.ch
;; ->>HEADER<<- opcode: QUERY; status: NOERROR; id: 29173
;; Flags: qr rd; QUERY: 1; ANSWER: 0; AUTHORITY: 1; ADDITIONAL: 3
;; EDNS PSEUDOSECTION:
;; Version: 0; flags: ; UDP size: 1232 B; ext-rcode: NOERROR
;; QUESTION SECTION:
;; dynamic.estada.ch. IN AAAA
;; AUTHORITY SECTION:
dynamic.estada.ch. 3600 IN NS dynamic.estada.ch.
;; ADDITIONAL SECTION:
dynamic.estada.ch. 3600 IN A 185.194.239.135
dynamic.estada.ch. 3600 IN AAAA 2a0a:51c0::12b
But public servers don't get the glue records:
kdig AAAA dynamic.estada.ch @9.9.9.9
;; ->>HEADER<<- opcode: QUERY; status: SERVFAIL; id: 63899
;; Flags: qr rd ra; QUERY: 1; ANSWER: 0; AUTHORITY: 0; ADDITIONAL: 1
;; EDNS PSEUDOSECTION:
;; Version: 0; flags: ; UDP size: 1232 B; ext-rcode: NOERROR
;; QUESTION SECTION:
;; dynamic.estada.ch. IN AAAA
The trouble is that most resolvers are now unable to resolve the domain as
the AAAA and A queries still get answered with NS + additional A+AAAA.
Is there a configuration option to tell knot to actually respond with the A
or AAAA record when asked?
Also ANY, TXT, or CAA queries behave the same as NS queries:
kdig ANY dynamic.estada.ch @ns1.estada.ch
;; ->>HEADER<<- opcode: QUERY; status: NOERROR; id: 14419
;; Flags: qr rd; QUERY: 1; ANSWER: 0; AUTHORITY: 1; ADDITIONAL: 3
;; EDNS PSEUDOSECTION:
;; Version: 0; flags: ; UDP size: 1232 B; ext-rcode: NOERROR
;; QUESTION SECTION:
;; dynamic.estada.ch. IN ANY
;; AUTHORITY SECTION:
dynamic.estada.ch. 3600 IN NS dynamic.estada.ch.
;; ADDITIONAL SECTION:
dynamic.estada.ch. 3600 IN A 185.194.239.135
dynamic.estada.ch. 3600 IN AAAA 2a0a:51c0::12b
I am happy for any pointers you may have.
Cheers,
Stefan