How to open edns?

[FenghenHome]

How to open edns? I am using dig +subnet without answering.

[FenghenHome]

root@ubuntu:~# dig @127.0.0.1 -p 53 www.google.com +subnet=1.1.1.1

; <<>> DiG 9.10.3-P4-Ubuntu <<>> @127.0.0.1 -p 53 www.google.com +subnet=1.1.1.1
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 244
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1536
;; QUESTION SECTION:
;www.google.com. IN A

;; ANSWER SECTION:
www.google.com. 300 IN A 216.58.200.4

;; Query time: 96 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Fri Feb 15 20:35:02 CST 2019
;; MSG SIZE rcvd: 73

[semihalev]

EDNS subnet support currently disabled because of privacy concerns, if you want to use EDNS subnet, you can remove comment on this line https://github.com/semihalev/sdns/blob/master/dnsutil/dnsutil.go#L122 and build again.

[FenghenHome]

Hello, guys, thank you for your reply, if I want to use only rootservers to parse dns, what should I do?

[FenghenHome]

root@ubuntu:~# dig @127.0.0.1 -p 53 www.google.com +subnet=1.1.1.1

; <<>> DiG 9.10.3-P4-Ubuntu <<>> @127.0.0.1 -p 53 www.google.com +subnet=1.1.1.1
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 50713
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1536
;; QUESTION SECTION:
;www.google.com. IN A

;; ANSWER SECTION:
www.google.com. 300 IN A 216.58.200.4

;; Query time: 20 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Sat Feb 16 10:57:56 CST 2019
;; MSG SIZE rcvd: 73

[FenghenHome]

Has been modified, still can not use edns, please help me!

[semihalev]

Your dig version very old, you can update but try like this.

dig @127.0.0.1 -p 53 www.google.com +subnet=1.1.1.1 +edns

[FenghenHome]

root@ubuntu:~# dig @127.0.0.1 -p 53 www.google.com +subnet=1.1.1.1 +edns

; <<>> DiG 9.10.3-P4-Ubuntu <<>> @127.0.0.1 -p 53 www.google.com +subnet=1.1.1.1 +edns
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 62778
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1536
;; QUESTION SECTION:
;www.google.com. IN A

;; ANSWER SECTION:
www.google.com. 300 IN A 216.58.200.4

;; Query time: 15 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Sat Feb 16 13:06:04 CST 2019
;; MSG SIZE rcvd: 73

[FenghenHome]

Still can not use edns, please help me!

[FenghenHome]

root@ubuntu:~# dig @8.8.8.8 www.google.com +subnet=1.1.1.1 +edns

; <<>> DiG 9.10.3-P4-Ubuntu <<>> @8.8.8.8 www.google.com +subnet=1.1.1.1 +edns
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 35828
;; flags: qr rd ra; QUERY: 1, ANSWER: 6, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
; CLIENT-SUBNET: 1.1.1.1/32/24
;; QUESTION SECTION:
;www.google.com. IN A

;; ANSWER SECTION:
www.google.com. 299 IN A 172.217.194.103
www.google.com. 299 IN A 172.217.194.106
www.google.com. 299 IN A 172.217.194.99
www.google.com. 299 IN A 172.217.194.104
www.google.com. 299 IN A 172.217.194.147
www.google.com. 299 IN A 172.217.194.105

;; Query time: 15 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Sat Feb 16 13:07:10 CST 2019
;; MSG SIZE rcvd: 151

[FenghenHome]

My dig is ok.

[FenghenHome]

please help me!