আমি কীভাবে ক্লায়েন্টে আমার প্রশ্নের জবাব দিচ্ছি তাতে কীভাবে পার্থক্য রয়েছে তা আমি বুঝতে অক্ষম। আমি ডিএনএসে জোন ফাইলটি নীচের মতো কনফিগার করেছি
$ORIGIN mail.lab.example.com.
$TTL 0
@ IN SOA colombo root.mail.lab.example.com. (
2003022720 ; Serial
56800 ; Refresh
14400 ; Retry
3600000 ; Expire
2h ) ; Min
@ IN NS mail.lab.example.com.
@ IN A 198.51.100.157
;NAPTR Records
pcr20718 IN NAPTR 10 34 "s" "SIP+D2U" "" _sip._udp.pcr20718
;SRV Records
_sip._udp.pcr20718 IN SRV 9 17 15103 pcr20718
;A Records
pcr20718 IN A 10.54.80.7
pcr20718 IN AAAA fd00:10:6b50:4500::9b
$ORIGIN webmail.mail.lab.example.com.
@ IN NS ns1.webmail.mail.lab.example.com.
ns1 IN A 198.51.100.156
@ IN NS ns2.webmail.mail.lab.example.com.
ns2 IN A 198.51.100.155
@ IN NS ns3.webmail.mail.lab.example.com.
ns3 IN A 198.51.100.154
@ IN NS ns4.webmail.mail.lab.example.com.
ns4 IN A 198.51.100.153
@ IN NS ns5.webmail.mail.lab.example.com.
ns5 IN A 198.51.100.152
@ IN NS ns6.webmail.mail.lab.example.com.
ns6 IN A 198.51.100.151
@ IN NS ns7.webmail.mail.lab.example.com.
ns7 IN A 198.51.100.150
@ IN NS ns8.webmail.mail.lab.example.com.
ns8 IN A 198.51.100.147
@ IN NS ns9.webmail.mail.lab.example.com.
ns9 IN A 198.51.100.146
@ IN NS ns10.webmail.mail.lab.example.com.
ns10 IN A 198.51.100.145
@ IN NS ns11.webmail.mail.lab.example.com.
ns11 IN A 198.51.100.144
@ IN NS ns12.webmail.mail.lab.example.com.
ns12 IN A 198.51.100.143
@ IN NS ns13.webmail.mail.lab.example.com.
ns13 IN A 198.51.100.142
@ IN NS ns14.webmail.mail.lab.example.com.
ns14 IN A 198.51.100.141
@ IN NS ns15.webmail.mail.lab.example.com.
ns15 IN A 198.51.100.140
@ IN NS ns16.webmail.mail.lab.example.com.
ns16 IN A 198.51.100.148
@ IN NS ns17.webmail.mail.lab.example.com.
ns17 IN A 198.51.100.149
@ IN NS ns18.webmail.mail.lab.example.com.
ns18 IN A 198.51.100.157
আমি যখন ডিএনএস সার্ভারে খনন করি তখন আমি প্রতিক্রিয়াগুলি সঠিকভাবে পাই
colombodns2:/var/lib/named # dig webmail.mail.lab.example.com. NAPTR
; <<>> DiG 9.9.5-rpz2+rl.14038.05-P1 <<>> webmail.mail.lab.example.com. NAPTR
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 20175
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 18, ADDITIONAL: 19
;; WARNING: recursion requested but not available
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;webmail.mail.lab.example.com. IN NAPTR
;; AUTHORITY SECTION:
webmail.mail.lab.example.com. 0 IN NS ns9.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns18.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns11.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns2.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns4.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns8.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns10.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns17.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns12.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns3.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns6.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns14.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns16.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns15.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns7.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns1.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns5.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns13.webmail.mail.lab.example.com.
;; ADDITIONAL SECTION:
ns1.webmail.mail.lab.example.com. 0 IN A 198.51.100.156
ns2.webmail.mail.lab.example.com. 0 IN A 198.51.100.155
ns3.webmail.mail.lab.example.com. 0 IN A 198.51.100.154
ns4.webmail.mail.lab.example.com. 0 IN A 198.51.100.153
ns5.webmail.mail.lab.example.com. 0 IN A 198.51.100.152
ns6.webmail.mail.lab.example.com. 0 IN A 198.51.100.151
ns7.webmail.mail.lab.example.com. 0 IN A 198.51.100.150
ns8.webmail.mail.lab.example.com. 0 IN A 198.51.100.147
ns9.webmail.mail.lab.example.com. 0 IN A 198.51.100.146
ns10.webmail.mail.lab.example.com. 0 IN A 198.51.100.145
ns11.webmail.mail.lab.example.com. 0 IN A 198.51.100.144
ns12.webmail.mail.lab.example.com. 0 IN A 198.51.100.143
ns13.webmail.mail.lab.example.com. 0 IN A 198.51.100.142
ns14.webmail.mail.lab.example.com. 0 IN A 198.51.100.141
ns15.webmail.mail.lab.example.com. 0 IN A 198.51.100.140
ns16.webmail.mail.lab.example.com. 0 IN A 198.51.100.148
ns17.webmail.mail.lab.example.com. 0 IN A 198.51.100.149
ns18.webmail.mail.lab.example.com. 0 IN A 198.51.100.157
;; Query time: 27 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue Oct 17 11:02:49 IST 2017
;; MSG SIZE rcvd: 678
আমি যখন ক্লায়েন্টের কাছ থেকে ছুটে যাচ্ছি, আমি আমার প্রশ্নগুলিতে টিসি (ট্রানসেশন বিট) সেটটি দেখতে পাচ্ছি না। কাণ্ড কি এনএস প্রশ্নের জন্য কাজ করবে?
dig @203.0.113.1 webmail.mail.lab.example.com. NAPTR +edns=0 +bufsize=512
; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.62.rc1.el6_9.4 <<>> @203.0.113.1 webmail.mail.lab.example.com. NAPTR +edns=0 +bufsize=512
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 20571
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 18, ADDITIONAL: 8
;; WARNING: recursion requested but not available
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;webmail.mail.lab.example.com. IN NAPTR
;; AUTHORITY SECTION:
webmail.mail.lab.example.com. 0 IN NS ns8.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns12.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns13.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns14.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns1.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns16.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns9.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns3.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns10.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns18.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns5.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns11.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns2.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns6.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns7.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns17.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns15.webmail.mail.lab.example.com.
webmail.mail.lab.example.com. 0 IN NS ns4.webmail.mail.lab.example.com.
;; ADDITIONAL SECTION:
ns1.webmail.mail.lab.example.com. 0 IN A 198.51.100.156
ns2.webmail.mail.lab.example.com. 0 IN A 198.51.100.155
ns3.webmail.mail.lab.example.com. 0 IN A 198.51.100.154
ns4.webmail.mail.lab.example.com. 0 IN A 198.51.100.153
ns5.webmail.mail.lab.example.com. 0 IN A 198.51.100.152
ns6.webmail.mail.lab.example.com. 0 IN A 198.51.100.151
ns7.webmail.mail.lab.example.com. 0 IN A 198.51.100.150
;; Query time: 1 msec
;; SERVER: 203.0.113.1#53(203.0.113.1)
;; WHEN: Tue Oct 17 11:40:31 2017
;; MSG SIZE rcvd: 502
এটি কি আমার ডিএনএস সার্ভারের সাথে এমন কিছু করতে হবে যা কাটছাঁটি বিট সেট করতে সক্ষম হয় না? আমি দেখতে চাই ট্রুকেশন বিট সেট আপ হয়ে টিসিপিতে ফ্যালব্যাক করছে। তবে তা ব্যর্থ বলে মনে হচ্ছে
আমি কী ভুল করছি?