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Hey guys,

I've been trying to get a bitcoin-seeder working myself, but i keep getting stuck trying to set up a nameserver..

The things i have:
1. VPS where i want to run the dnsseed on (12.345.678.90)
2. Sub-domain (seed.example.com)
3. Sub-domain2 (ns0.example.com)

The steps i took are:
1. Go to the subdomain seed.example.com and go to DNS settings.
2. Select NS-record and put "ns0.example.com" in it
3. Go to sub-domain "ns0.example.com" and put a A-record with the VPS ip "12.345.678.90"

When i run "dig -t NS seed.example.com" i get an servfail and it wont show anything:

Code:

dig -t NS seed.helix-crypto.com

; <<>> DiG 9.10.3-P4-Ubuntu <<>> -t NS seed.example.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 11513
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; MBZ: 0005 , udp: 4096
;; QUESTION SECTION:
;seed.example.com. IN NS

;; Query time: 38 msec
;; SERVER: 127.0.1.1#53(127.0.1.1)
;; WHEN: Fri Dec 14 09:55:51 PST 2018
;; MSG SIZE rcvd: 50

When i run "dig -t A ns0.example.com" i do get the A record forwarding to the VPS IP:

Code:

dig -t A ns0.helix-crypto.com

; <<>> DiG 9.10.3-P4-Ubuntu <<>> -t A ns0.example.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10330
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; MBZ: 0005 , udp: 4096
;; QUESTION SECTION:
;ns0.example.com. IN A

;; ANSWER SECTION:
ns0.example.com. 5 IN A 12.345.678.90

;; Query time: 36 msec
;; SERVER: 127.0.1.1#53(127.0.1.1)
;; WHEN: Fri Dec 14 11:15:54 PST 2018
;; MSG SIZE rcvd: 65

When i try to run the dnsseed program it wont find my any seeds either this way:
./dnsseed -h seed.example.com -n ns0.example.com -p 5353
https://i.gyazo.com/f2b52ec55e1b8d6ce3737e08feb47a5f.png

When i go back to the sub-domain seed.example.com and remove the NS record and change it with a A record directly to the VPS i get:

Code:

dig -t NS seed.example.com

; <<>> DiG 9.10.3-P4-Ubuntu <<>> -t NS seed.example.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 58593
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; MBZ: 0005 , udp: 4096
;; QUESTION SECTION:
;seed.example.com. IN NS

;; AUTHORITY SECTION:
example.com. 5 IN SOA shades19.rzone.de. hostmaster.strato-rz.de. 2018121404 86400 7200 604800 7200

;; Query time: 36 msec
;; SERVER: 127.0.1.1#53(127.0.1.1)
;; WHEN: Fri Dec 14 11:20:26 PST 2018
;; MSG SIZE rcvd: 124

And when i run dnsseed with the following parameters it does find seeds, but it wont broadcast them to the dns:
./dnsseed -h seed.example.com -n 12.345.678.90 -p 5353
https://i.gyazo.com/04db23b1de72e8080aa45ceb15e1d2fc.png

It seems like whatever i try, i keep getting servfail when i set a NS to anything. Does anyone have any clue what i'm doing wrong and what i should change to get it working?