The problem of site accessibility www.freebsd.org

Hi, all.
Don`t avaible site www.freebsd.org, maybe on name servers problem?
Code:
root@freebsd:/usr/ports # drill www.freebsd.org
;; ->>HEADER<<- opcode: QUERY, rcode: SERVFAIL, id: 40298
;; flags: qr rd ra ; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;; www.freebsd.org.     IN      A

;; ANSWER SECTION:

;; AUTHORITY SECTION:

;; ADDITIONAL SECTION:

;; Query time: 3218 msec
;; SERVER: 127.0.0.1
;; WHEN: Sun Aug  9 02:24:03 2020
;; MSG SIZE  rcvd: 33
But
Code:
root@freebsd:/usr/ports # drill forums.freebsd.org
;; ->>HEADER<<- opcode: QUERY, rcode: NOERROR, id: 47557
;; flags: qr rd ra ; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 8
;; QUESTION SECTION:
;; forums.freebsd.org.  IN      A

;; ANSWER SECTION:
forums.freebsd.org.     2681    IN      A       204.109.59.195

;; AUTHORITY SECTION:
freebsd.org.    3148    IN      NS      ns3.he.net.
freebsd.org.    3148    IN      NS      ns2.he.net.
freebsd.org.    3148    IN      NS      ns4.he.net.
freebsd.org.    3148    IN      NS      ns5.he.net.

;; ADDITIONAL SECTION:
ns2.he.net.     171594  IN      A       216.218.131.2
ns3.he.net.     171594  IN      A       216.218.132.2
ns4.he.net.     171594  IN      A       216.66.1.2
ns5.he.net.     171594  IN      A       216.66.80.18
ns2.he.net.     171594  IN      AAAA    2001:470:200::2
ns3.he.net.     171594  IN      AAAA    2001:470:300::2
ns4.he.net.     171594  IN      AAAA    2001:470:400::2
ns5.he.net.     171594  IN      AAAA    2001:470:500::2

;; Query time: 0 msec
;; SERVER: 127.0.0.1
;; WHEN: Sun Aug  9 02:28:39 2020
;; MSG SIZE  rcvd: 306
 
And more:
Code:
root@freebsd:/usr/ports # drill www.freebsd.org soa
;; ->>HEADER<<- opcode: QUERY, rcode: SERVFAIL, id: 39890
;; flags: qr rd ra ; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;; www.freebsd.org.     IN      SOA

;; ANSWER SECTION:

;; AUTHORITY SECTION:

;; ADDITIONAL SECTION:

;; Query time: 3226 msec
;; SERVER: 127.0.0.1
;; WHEN: Sun Aug  9 02:32:11 2020
;; MSG SIZE  rcvd: 33
But
Code:
root@freebsd:/usr/ports # drill forums.freebsd.org soa
;; ->>HEADER<<- opcode: QUERY, rcode: NOERROR, id: 42163
;; flags: qr rd ra ; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUESTION SECTION:
;; forums.freebsd.org.  IN      SOA
;; ANSWER SECTION:
;; AUTHORITY SECTION:
freebsd.org.    3600    IN      SOA     ns0.freebsd.org. hostmaster.freebsd.org. 2020080824 3600 900 1209600 3600
;; ADDITIONAL SECTION:
;; Query time: 47 msec
;; SERVER: 127.0.0.1
;; WHEN: Sun Aug  9 02:31:06 2020
;; MSG SIZE  rcvd: 87
 
And question to name server:
Code:
root@freebsd:/usr/ports # drill www.freebsd.org @ns0.freebsd.org
;; ->>HEADER<<- opcode: QUERY, rcode: NOERROR, id: 54986
;; flags: qr aa rd ; QUERY: 1, ANSWER: 2, AUTHORITY: 4, ADDITIONAL: 0
;; QUESTION SECTION:
;; www.freebsd.org.     IN      A

;; ANSWER SECTION:
www.freebsd.org.        60      IN      CNAME   wfe0.nyi.freebsd.org.
wfe0.nyi.freebsd.org.   3600    IN      A       96.47.72.84

;; AUTHORITY SECTION:
freebsd.org.    3600    IN      NS      ns2.he.net.
freebsd.org.    3600    IN      NS      ns3.he.net.
freebsd.org.    3600    IN      NS      ns4.he.net.
freebsd.org.    3600    IN      NS      ns5.he.net.

;; ADDITIONAL SECTION:

;; Query time: 109 msec
;; SERVER: 96.47.72.78
;; WHEN: Sun Aug  9 02:36:48 2020
;; MSG SIZE  rcvd: 150
 
Works perfectly here:
Code:
> drill www.freebsd.org
;; ->>HEADER<<- opcode: QUERY, rcode: NOERROR, id: 7030
;; flags: qr rd ra ; QUERY: 1, ANSWER: 2, AUTHORITY: 4, ADDITIONAL: 4
;; QUESTION SECTION:
;; www.freebsd.org.    IN    A

;; ANSWER SECTION:
www.freebsd.org.    34    IN    CNAME    wfe0.nyi.freebsd.org.
wfe0.nyi.freebsd.org.    3574    IN    A    96.47.72.84

;; AUTHORITY SECTION:
freebsd.org.    50973    IN    NS    ns2.he.net.
freebsd.org.    50973    IN    NS    ns5.he.net.
freebsd.org.    50973    IN    NS    ns3.he.net.
freebsd.org.    50973    IN    NS    ns4.he.net.

;; ADDITIONAL SECTION:
ns2.he.net.    8568    IN    A    216.218.131.2
ns3.he.net.    8568    IN    A    216.218.132.2
ns4.he.net.    8568    IN    A    216.66.1.2
ns5.he.net.    8568    IN    A    216.66.80.18

;; Query time: 0 msec
;; SERVER: 127.0.0.1
;; WHEN: Sat Aug  8 18:03:27 2020
;; MSG SIZE  rcvd: 214

> drill www.freebsd.org soa
;; ->>HEADER<<- opcode: QUERY, rcode: NOERROR, id: 47442
;; flags: qr rd ra ; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0
;; QUESTION SECTION:
;; www.freebsd.org.    IN    SOA

;; ANSWER SECTION:
www.freebsd.org.    60    IN    CNAME    wfe0.nyi.freebsd.org.

;; AUTHORITY SECTION:
freebsd.org.    3600    IN    SOA    ns0.freebsd.org. hostmaster.freebsd.org. 2020080901 3600 900 1209600 3600

;; ADDITIONAL SECTION:

;; Query time: 74 msec
;; SERVER: 127.0.0.1
;; WHEN: Sat Aug  8 18:04:33 2020
;; MSG SIZE  rcvd: 107

ping www.freebsd.org
PING wfe0.nyi.freebsd.org (96.47.72.84): 56 data bytes
64 bytes from 96.47.72.84: icmp_seq=0 ttl=53 time=81.088 ms
64 bytes from 96.47.72.84: icmp_seq=1 ttl=53 time=80.693 ms
^C
What is your upstream DNS? And what are they doing?
 
I use bind911-9.11.21_1
and run named in console from debug level (10.144.40.12 the my computer and 127.0.0.1 -FreeBSD server)
Code:
11-Aug-2020 02:09:34.521 dns_adb_destroyfind on find 0x80329d680
11-Aug-2020 02:09:34.521 dns_adb_destroyfind on find 0x80328e3a0
11-Aug-2020 02:09:35.113 client @0x802c76400 10.144.40.12#54442: UDP request
11-Aug-2020 02:09:35.113 client @0x802c76400 10.144.40.12#54442: using view '_default'
11-Aug-2020 02:09:35.113 client @0x802c76400 10.144.40.12#54442: request is not signed
11-Aug-2020 02:09:35.113 client @0x802c76400 10.144.40.12#54442: recursion available
11-Aug-2020 02:09:35.113 client @0x802c76400 10.144.40.12#54442: query
11-Aug-2020 02:09:35.113 client @0x802c76400 10.144.40.12#54442 (www.freebsd.org): query (cache) 'www.freebsd.org/A/IN' approved
11-Aug-2020 02:09:35.113 client @0x802c76400 10.144.40.12#54442 (www.freebsd.org): replace
11-Aug-2020 02:09:35.113 clientmgr @0x802cbe180: get client
11-Aug-2020 02:09:35.113 clientmgr @0x802cbe180: recycle
11-Aug-2020 02:09:35.113 fetch: www.freebsd.org/A
11-Aug-2020 02:09:35.113 client @0x803811a00 (no-peer): udprecv
11-Aug-2020 02:09:35.166 dns_adb_destroyfind on find 0x80329d680
11-Aug-2020 02:09:35.166 dns_adb_destroyfind on find 0x80328e3a0
11-Aug-2020 02:09:35.166 dns_adb_destroyfind on find 0x80327cca0
11-Aug-2020 02:09:35.166 dns_adb_destroyfind on find 0x803285e60
11-Aug-2020 02:09:35.166 dns_adb_destroyfind on find 0x80328bd80
11-Aug-2020 02:09:35.166 dns_adb_destroyfind on find 0x80328c1e0
11-Aug-2020 02:09:35.166 fetch: ns2.he.net/A
11-Aug-2020 02:09:35.166 dns_adb_createfind: started A fetch for name ns2.he.net (0x8032a95f0)
11-Aug-2020 02:09:35.166 createfind: attaching find 0x80328c1e0 to adbname 0x8032a95f0
11-Aug-2020 02:09:35.166 fetch: ns3.he.net/A
11-Aug-2020 02:09:35.167 dns_adb_createfind: started A fetch for name ns3.he.net (0x8032a94c0)
11-Aug-2020 02:09:35.167 createfind: attaching find 0x803285e60 to adbname 0x8032a94c0
11-Aug-2020 02:09:35.167 fetch: ns4.he.net/A
11-Aug-2020 02:09:35.167 dns_adb_createfind: started A fetch for name ns4.he.net (0x8032a9300)
11-Aug-2020 02:09:35.167 createfind: attaching find 0x80327d1e0 to adbname 0x8032a9300
11-Aug-2020 02:09:35.167 fetch: ns5.he.net/A
11-Aug-2020 02:09:35.167 dns_adb_createfind: started A fetch for name ns5.he.net (0x8032a91d0)
11-Aug-2020 02:09:35.167 createfind: attaching find 0x80328da00 to adbname 0x8032a91d0
11-Aug-2020 02:09:35.205 client @0x803811a00 10.144.40.12#54442: UDP request
11-Aug-2020 02:09:35.205 client @0x803811a00 10.144.40.12#54442: using view '_default'
11-Aug-2020 02:09:35.205 client @0x803811a00 10.144.40.12#54442: request is not signed
11-Aug-2020 02:09:35.205 client @0x803811a00 10.144.40.12#54442: recursion available
11-Aug-2020 02:09:35.205 client @0x803811a00 10.144.40.12#54442: query
11-Aug-2020 02:09:35.205 client @0x803811a00 10.144.40.12#54442 (www.freebsd.org): query (cache) 'www.freebsd.org/A/IN' approved
11-Aug-2020 02:09:35.205 client @0x803811a00 10.144.40.12#54442 (www.freebsd.org): replace
11-Aug-2020 02:09:35.205 clientmgr @0x802cbe180: get client
11-Aug-2020 02:09:35.205 clientmgr @0x802cbe180: recycle
11-Aug-2020 02:09:35.205 fetch: www.freebsd.org/A
11-Aug-2020 02:09:35.205 client @0x803811a00 10.144.40.12#54442 (www.freebsd.org): next
11-Aug-2020 02:09:35.205 client @0x803811a00 10.144.40.12#54442 (www.freebsd.org): request failed: duplicate query
11-Aug-2020 02:09:35.205 client @0x803811a00 10.144.40.12#54442 (www.freebsd.org): endrequest
11-Aug-2020 02:09:35.206 client @0x802c70a00 (no-peer): udprecv
11-Aug-2020 02:09:35.206 dns_adb_destroyfind on find 0x80328bd80
11-Aug-2020 02:09:35.206 dns_adb_destroyfind on find 0x80327cca0
11-Aug-2020 02:09:35.206 dns_adb_destroyfind on find 0x8032862c0
11-Aug-2020 02:09:35.206 dns_adb_destroyfind on find 0x80328c020
11-Aug-2020 02:09:35.206 dns_adb_destroyfind on find 0x8032863a0
11-Aug-2020 02:09:35.206 dns_adb_destroyfind on find 0x8032861e0
11-Aug-2020 02:09:35.206 dns_adb_destroyfind on find 0x803283ca0
11-Aug-2020 02:09:35.206 dns_adb_destroyfind on find 0x803283ae0
11-Aug-2020 02:09:35.206 dns_adb_destroyfind on find 0x803285a00
11-Aug-2020 02:09:35.206 dns_adb_destroyfind on find 0x80328b920
11-Aug-2020 02:09:35.206 dns_adb_destroyfind on find 0x80327d2c0
11-Aug-2020 02:09:35.206 dns_adb_destroyfind on find 0x803285f40
11-Aug-2020 02:09:35.206 dns_adb_destroyfind on find 0x803284020
11-Aug-2020 02:09:35.206 dns_adb_destroyfind on find 0x803285ca0
11-Aug-2020 02:09:35.207 dns_adb_destroyfind on find 0x80327d3a0
11-Aug-2020 02:09:35.207 dns_adb_destroyfind on find 0x80328d4c0
11-Aug-2020 02:09:35.207 dns_adb_destroyfind on find 0x80328bbc0
11-Aug-2020 02:09:35.207 dns_adb_createfind: found A for name ns1.he.net (0x8032a90a0) in db
11-Aug-2020 02:09:35.207 dns_adb_createfind: found A for name ns2.he.net (0x8032a8f70) in db
11-Aug-2020 02:09:35.207 dns_adb_createfind: found A for name ns3.he.net (0x8032a8e40) in db
11-Aug-2020 02:09:35.207 dns_adb_createfind: found A for name ns4.he.net (0x8032a8d10) in db
11-Aug-2020 02:09:35.207 dns_adb_createfind: found A for name ns5.he.net (0x8032a8be0) in db
11-Aug-2020 02:09:35.207 dns_adb_destroyfind on find 0x80328e3a0
11-Aug-2020 02:09:35.207 dns_adb_destroyfind on find 0x80327c760
11-Aug-2020 02:09:35.207 dns_adb_destroyfind on find 0x80329d760
11-Aug-2020 02:09:35.207 dns_adb_destroyfind on find 0x80327cae0
11-Aug-2020 02:09:35.207 dns_adb_destroyfind on find 0x8032835a0
11-Aug-2020 02:09:35.207 dns_adb_destroyfind on find 0x80329d680
11-Aug-2020 02:09:35.207 dns_adb_destroyfind on find 0x80328b760
11-Aug-2020 02:09:35.207 dns_adb_destroyfind on find 0x80329d840
11-Aug-2020 02:09:35.207 dns_adb_destroyfind on find 0x80327c680
11-Aug-2020 02:09:35.208 dns_adb_destroyfind on find 0x80328b5a0
11-Aug-2020 02:09:35.208 dns_adb_destroyfind on find 0x80328c100
11-Aug-2020 02:09:35.208 dns_adb_destroyfind on find 0x803283760
11-Aug-2020 02:09:35.208 dns_adb_destroyfind on find 0x803285bc0
11-Aug-2020 02:09:35.208 dns_adb_destroyfind on find 0x80328bca0
11-Aug-2020 02:09:35.208 dns_adb_destroyfind on find 0x8032841e0
11-Aug-2020 02:09:35.208 dns_adb_destroyfind on find 0x803285d80
11-Aug-2020 02:09:35.208 dns_adb_destroyfind on find 0x80328c2c0
11-Aug-2020 02:09:35.208 dns_adb_destroyfind on find 0x80327cbc0
11-Aug-2020 02:09:35.208 dns_adb_destroyfind on find 0x803283f40
11-Aug-2020 02:09:35.208 dns_adb_destroyfind on find 0x803286100
11-Aug-2020 02:09:35.208 dns_adb_destroyfind on find 0x80328b680
11-Aug-2020 02:09:35.208 dns_adb_destroyfind on find 0x803285920
11-Aug-2020 02:09:35.209 dns_adb_destroyfind on find 0x803284100
11-Aug-2020 02:09:35.209 dns_adb_destroyfind on find 0x80327cf40
11-Aug-2020 02:09:35.209 dns_adb_destroyfind on find 0x803285680
11-Aug-2020 02:09:35.209 dns_adb_destroyfind on find 0x803285840
11-Aug-2020 02:09:35.209 dns_adb_destroyfind on find 0x8032855a0
11-Aug-2020 02:09:35.209 dns_adb_destroyfind on find 0x80327cd80
11-Aug-2020 02:09:35.209 dns_adb_destroyfind on find 0x8032842c0
11-Aug-2020 02:09:35.209 dns_adb_destroyfind on find 0x80328be60
11-Aug-2020 02:09:35.209 dns_adb_destroyfind on find 0x80328d5a0
11-Aug-2020 02:09:35.209 dns_adb_destroyfind on find 0x80329d4c0
11-Aug-2020 02:09:35.209 dns_adb_destroyfind on find 0x80327ce60
11-Aug-2020 02:09:35.209 dns_adb_destroyfind on find 0x80327d020
11-Aug-2020 02:09:35.209 dns_adb_destroyfind on find 0x80329d5a0
11-Aug-2020 02:09:35.248 DNS_EVENT_ADBMOREADDRESSES
11-Aug-2020 02:09:35.248 cfan: processing find 0x80328c1e0
11-Aug-2020 02:09:35.248 sending event 0x80328c248 to task 0x802cd2180 for find 0x80328c1e0
11-Aug-2020 02:09:35.249 dns_adb_destroyfind on find 0x80328c1e0
11-Aug-2020 02:09:35.249 dns_adb_createfind: found A for name ns3.he.net (0x8032a94c0) in db
11-Aug-2020 02:09:35.249 dns_adb_createfind: found A for name ns4.he.net (0x8032a9300) in db
11-Aug-2020 02:09:35.249 dns_adb_createfind: found A for name ns5.he.net (0x8032a91d0) in db
11-Aug-2020 02:09:35.249 dns_adb_destroyfind on find 0x80327c680
11-Aug-2020 02:09:35.249 dns_adb_destroyfind on find 0x80329d680
11-Aug-2020 02:09:35.249 dns_adb_destroyfind on find 0x80328b760
11-Aug-2020 02:09:35.249 dns_adb_destroyfind on find 0x80329d840
11-Aug-2020 02:09:35.249 dns_adb_destroyfind on find 0x8032835a0
11-Aug-2020 02:09:35.249 DNS_EVENT_ADBMOREADDRESSES
11-Aug-2020 02:09:35.249 dns_adb_destroyfind on find 0x803285920
11-Aug-2020 02:09:35.249 cfan: processing find 0x80328da00
11-Aug-2020 02:09:35.249 dns_adb_destroyfind on find 0x803283f40
11-Aug-2020 02:09:35.249 sending event 0x80328da68 to task 0x802cd2180 for find 0x80328da00
11-Aug-2020 02:09:35.249 dns_adb_destroyfind on find 0x803286100
11-Aug-2020 02:09:35.249 dns_adb_destroyfind on find 0x80328da00
11-Aug-2020 02:09:35.249 dns_adb_destroyfind on find 0x80328b680
11-Aug-2020 02:09:35.249 dns_adb_destroyfind on find 0x80327cbc0
11-Aug-2020 02:09:35.250 dns_adb_destroyfind on find 0x80329d5a0
11-Aug-2020 02:09:35.250 dns_adb_destroyfind on find 0x80329d4c0
11-Aug-2020 02:09:35.250 DNS_EVENT_ADBMOREADDRESSES
11-Aug-2020 02:09:35.250 cfan: processing find 0x80327d1e0
11-Aug-2020 02:09:35.250 sending event 0x80327d248 to task 0x802cd2180 for find 0x80327d1e0
11-Aug-2020 02:09:35.251 DNS_EVENT_ADBMOREADDRESSES
11-Aug-2020 02:09:35.251 cfan: processing find 0x803285e60
11-Aug-2020 02:09:35.251 sending event 0x803285ec8 to task 0x802cd2180 for find 0x803285e60
11-Aug-2020 02:09:35.251 dns_adb_destroyfind on find 0x80327d1e0
11-Aug-2020 02:09:35.251 dns_adb_destroyfind on find 0x803285e60
11-Aug-2020 02:09:35.251 dns_adb_destroyfind on find 0x80328bbc0
11-Aug-2020 02:09:35.251 dns_adb_destroyfind on find 0x803285ca0
11-Aug-2020 02:09:35.251 dns_adb_destroyfind on find 0x80327d3a0
11-Aug-2020 02:09:35.251 dns_adb_destroyfind on find 0x80328d4c0
11-Aug-2020 02:09:35.251 dns_adb_destroyfind on find 0x803284020
11-Aug-2020 02:09:35.251 dns_adb_destroyfind on find 0x80327ce60
11-Aug-2020 02:09:35.251 dns_adb_destroyfind on find 0x80327d020
11-Aug-2020 02:09:35.251 dns_adb_destroyfind on find 0x80328d5a0
11-Aug-2020 02:09:35.422 dns_adb_destroyfind on find 0x8032842c0
11-Aug-2020 02:09:35.422 dns_adb_destroyfind on find 0x80328be60
11-Aug-2020 02:09:35.422 dns_adb_destroyfind on find 0x80328c1e0
11-Aug-2020 02:09:35.422 dns_adb_destroyfind on find 0x80327cd80
11-Aug-2020 02:09:35.591 dns_adb_destroyfind on find 0x80328be60
11-Aug-2020 02:09:35.591 dns_adb_destroyfind on find 0x80327cd80
11-Aug-2020 02:09:35.591 dns_adb_destroyfind on find 0x80328c1e0
11-Aug-2020 02:09:35.591 dns_adb_destroyfind on find 0x8032842c0
11-Aug-2020 02:09:35.757 dns_adb_destroyfind on find 0x80327cd80
11-Aug-2020 02:09:35.757 dns_adb_destroyfind on find 0x8032842c0
11-Aug-2020 02:09:35.757 dns_adb_destroyfind on find 0x80328c1e0
11-Aug-2020 02:09:35.757 dns_adb_destroyfind on find 0x80328be60
11-Aug-2020 02:09:35.925 dns_adb_destroyfind on find 0x8032842c0
11-Aug-2020 02:09:35.926 dns_adb_destroyfind on find 0x80328be60
11-Aug-2020 02:09:35.926 dns_adb_destroyfind on find 0x80328c1e0
11-Aug-2020 02:09:35.926 dns_adb_destroyfind on find 0x80327cd80
11-Aug-2020 02:09:36.094 dns_adb_destroyfind on find 0x80328be60
11-Aug-2020 02:09:36.094 dns_adb_destroyfind on find 0x80327cd80
11-Aug-2020 02:09:36.094 dns_adb_destroyfind on find 0x8032842c0
11-Aug-2020 02:09:36.094 dns_adb_destroyfind on find 0x80328c1e0
11-Aug-2020 02:09:36.208 client @0x802c70a00 10.144.40.12#54442: UDP request
11-Aug-2020 02:09:36.208 client @0x802c70a00 10.144.40.12#54442: using view '_default'
11-Aug-2020 02:09:36.208 client @0x802c70a00 10.144.40.12#54442: request is not signed
11-Aug-2020 02:09:36.208 client @0x802c70a00 10.144.40.12#54442: recursion available
11-Aug-2020 02:09:36.208 client @0x802c70a00 10.144.40.12#54442: query
11-Aug-2020 02:09:36.208 client @0x802c70a00 10.144.40.12#54442 (www.freebsd.org): query (cache) 'www.freebsd.org/A/IN' approved
11-Aug-2020 02:09:36.208 client @0x802c70a00 10.144.40.12#54442 (www.freebsd.org): replace
11-Aug-2020 02:09:36.208 clientmgr @0x802cbe180: get client
11-Aug-2020 02:09:36.208 clientmgr @0x802cbe180: recycle
11-Aug-2020 02:09:36.208 fetch: www.freebsd.org/A
11-Aug-2020 02:09:36.208 client @0x802c70a00 10.144.40.12#54442 (www.freebsd.org): next
11-Aug-2020 02:09:36.208 client @0x802c70a00 10.144.40.12#54442 (www.freebsd.org): request failed: duplicate query
11-Aug-2020 02:09:36.208 client @0x802c70a00 10.144.40.12#54442 (www.freebsd.org): endrequest
11-Aug-2020 02:09:36.208 client @0x803811a00 (no-peer): udprecv
11-Aug-2020 02:09:36.259 dns_adb_destroyfind on find 0x80327cd80
11-Aug-2020 02:09:36.259 dns_adb_destroyfind on find 0x80328c1e0
11-Aug-2020 02:09:36.259 dns_adb_destroyfind on find 0x80328be60
11-Aug-2020 02:09:36.260 dns_adb_destroyfind on find 0x8032842c0
11-Aug-2020 02:09:36.428 dns_adb_destroyfind on find 0x80328c1e0
11-Aug-2020 02:09:36.428 dns_adb_destroyfind on find 0x80328be60
11-Aug-2020 02:09:36.428 dns_adb_destroyfind on find 0x8032842c0
11-Aug-2020 02:09:36.428 dns_adb_destroyfind on find 0x80327cd80
11-Aug-2020 02:09:36.591 dns_adb_destroyfind on find 0x80327cd80
11-Aug-2020 02:09:36.591 dns_adb_destroyfind on find 0x80328be60
11-Aug-2020 02:09:36.592 dns_adb_destroyfind on find 0x80328c1e0
11-Aug-2020 02:09:36.592 dns_adb_destroyfind on find 0x8032842c0
11-Aug-2020 02:09:36.757 dns_adb_destroyfind on find 0x8032842c0
11-Aug-2020 02:09:36.757 dns_adb_destroyfind on find 0x80328c1e0
11-Aug-2020 02:09:36.757 dns_adb_destroyfind on find 0x80327cd80
11-Aug-2020 02:09:36.757 dns_adb_destroyfind on find 0x80328be60
11-Aug-2020 02:09:36.925 dns_adb_destroyfind on find 0x8032842c0
11-Aug-2020 02:09:36.926 dns_adb_destroyfind on find 0x80327cd80
11-Aug-2020 02:09:36.926 dns_adb_destroyfind on find 0x80328c1e0
11-Aug-2020 02:09:36.926 dns_adb_destroyfind on find 0x80328be60
11-Aug-2020 02:09:37.096 dns_adb_destroyfind on find 0x8032842c0
11-Aug-2020 02:09:37.096 dns_adb_destroyfind on find 0x80328c1e0
11-Aug-2020 02:09:37.096 dns_adb_destroyfind on find 0x80327cd80
11-Aug-2020 02:09:37.096 dns_adb_destroyfind on find 0x80328be60
11-Aug-2020 02:09:37.269 dns_adb_destroyfind on find 0x80328be60
11-Aug-2020 02:09:37.270 dns_adb_destroyfind on find 0x8032842c0
11-Aug-2020 02:09:37.270 dns_adb_destroyfind on find 0x80328c1e0
11-Aug-2020 02:09:37.270 dns_adb_destroyfind on find 0x80327cd80
11-Aug-2020 02:09:37.438 dns_adb_destroyfind on find 0x8032842c0
11-Aug-2020 02:09:37.438 dns_adb_destroyfind on find 0x80328be60
11-Aug-2020 02:09:37.438 dns_adb_destroyfind on find 0x80328c1e0
11-Aug-2020 02:09:37.438 dns_adb_destroyfind on find 0x80327cd80
11-Aug-2020 02:09:37.607 dns_adb_destroyfind on find 0x80328be60
11-Aug-2020 02:09:37.607 dns_adb_destroyfind on find 0x8032842c0
11-Aug-2020 02:09:37.607 dns_adb_destroyfind on find 0x80327cd80
11-Aug-2020 02:09:37.607 dns_adb_destroyfind on find 0x80328c1e0
11-Aug-2020 02:09:37.772 dns_adb_destroyfind on find 0x80328be60
11-Aug-2020 02:09:37.772 dns_adb_destroyfind on find 0x80327cd80
11-Aug-2020 02:09:37.772 dns_adb_destroyfind on find 0x8032842c0
11-Aug-2020 02:09:37.772 dns_adb_destroyfind on find 0x80328c1e0
11-Aug-2020 02:09:37.938 dns_adb_destroyfind on find 0x80327cd80
11-Aug-2020 02:09:37.938 dns_adb_destroyfind on find 0x80328c1e0
11-Aug-2020 02:09:37.938 dns_adb_destroyfind on find 0x80328be60
11-Aug-2020 02:09:37.938 dns_adb_destroyfind on find 0x8032842c0
11-Aug-2020 02:09:37.979 exceeded max queries resolving 'www.freebsd.org/A'
11-Aug-2020 02:09:37.980 client @0x802c76400 10.144.40.12#54442 (www.freebsd.org): query failed (SERVFAIL) for www.freebsd.org/IN/A at query.c:8629
11-Aug-2020 02:09:37.980 client @0x802c76400 10.144.40.12#54442 (www.freebsd.org): error
11-Aug-2020 02:09:37.980 client @0x802c76400 10.144.40.12#54442 (www.freebsd.org): send
11-Aug-2020 02:09:37.980 client @0x802c76400 10.144.40.12#54442 (www.freebsd.org): sendto
11-Aug-2020 02:09:37.980 client @0x802c76400 10.144.40.12#54442 (www.freebsd.org): senddone
11-Aug-2020 02:09:37.980 client @0x802c76400 10.144.40.12#54442 (www.freebsd.org): next
11-Aug-2020 02:09:37.980 client @0x802c76400 10.144.40.12#54442 (www.freebsd.org): endrequest
11-Aug-2020 02:09:37.980 fetch completed at resolver.c:3857 for www.freebsd.org/A in 2.866432: SERVFAIL/success [domain:freebsd.org,referral:1,restart:18,qrysent:130,timeout:0,lame:0,quota:0,neterr:0,badresp:0,adberr:0,findfail:0,valfail:0]
11-Aug-2020 02:09:37.980 dns_adb_destroyfind on find 0x8032842c0
11-Aug-2020 02:09:37.980 dns_adb_destroyfind on find 0x80328be60
11-Aug-2020 02:09:37.980 dns_adb_destroyfind on find 0x80328c1e0
11-Aug-2020 02:09:37.980 dns_adb_destroyfind on find 0x80327cd80
11-Aug-2020 02:09:38.006 client @0x803811000 127.0.0.1#24921: UDP request
11-Aug-2020 02:09:38.006 client @0x803811000 127.0.0.1#24921: using view '_default'
11-Aug-2020 02:09:38.006 client @0x803811000 127.0.0.1#24921: request is not signed
11-Aug-2020 02:09:38.006 client @0x803811000 127.0.0.1#24921: recursion available
11-Aug-2020 02:09:38.006 client @0x803811000 127.0.0.1#24921: query
11-Aug-2020 02:09:38.006 client @0x803811000 127.0.0.1#24921 (www.freebsd.org): servfail cache hit www.freebsd.org/A (CD=0)
11-Aug-2020 02:09:38.006 client @0x803811000 127.0.0.1#24921 (www.freebsd.org): query failed (SERVFAIL) for www.freebsd.org/IN/A at query.c:7077
11-Aug-2020 02:09:38.006 client @0x803811000 127.0.0.1#24921 (www.freebsd.org): error
11-Aug-2020 02:09:38.007 client @0x803811000 127.0.0.1#24921 (www.freebsd.org): send
11-Aug-2020 02:09:38.007 client @0x803811000 127.0.0.1#24921 (www.freebsd.org): sendto
11-Aug-2020 02:09:38.007 client @0x803811000 127.0.0.1#24921 (www.freebsd.org): senddone
11-Aug-2020 02:09:38.007 client @0x803811000 127.0.0.1#24921 (www.freebsd.org): next
11-Aug-2020 02:09:38.007 client @0x803811000 127.0.0.1#24921 (www.freebsd.org): endrequest
11-Aug-2020 02:09:38.007 client @0x803811000 (no-peer): udprecv
11-Aug-2020 02:09:38.007 client @0x803811000 127.0.0.1#24921: UDP request
11-Aug-2020 02:09:38.007 client @0x803811000 127.0.0.1#24921: using view '_default'
11-Aug-2020 02:09:38.007 client @0x803811000 127.0.0.1#24921: request is not signed
11-Aug-2020 02:09:38.007 client @0x803811000 127.0.0.1#24921: recursion available
11-Aug-2020 02:09:38.007 client @0x803811000 127.0.0.1#24921: query
11-Aug-2020 02:09:38.007 client @0x803811000 127.0.0.1#24921 (www.freebsd.org): servfail cache hit www.freebsd.org/A (CD=0)
11-Aug-2020 02:09:38.007 client @0x803811000 127.0.0.1#24921 (www.freebsd.org): query failed (SERVFAIL) for www.freebsd.org/IN/A at query.c:7077
11-Aug-2020 02:09:38.007 client @0x803811000 127.0.0.1#24921 (www.freebsd.org): error
11-Aug-2020 02:09:38.007 client @0x803811000 127.0.0.1#24921 (www.freebsd.org): send
11-Aug-2020 02:09:38.007 client @0x803811000 127.0.0.1#24921 (www.freebsd.org): sendto
11-Aug-2020 02:09:38.008 client @0x803811000 127.0.0.1#24921 (www.freebsd.org): senddone
11-Aug-2020 02:09:38.008 client @0x803811000 127.0.0.1#24921 (www.freebsd.org): next
11-Aug-2020 02:09:38.008 client @0x803811000 127.0.0.1#24921 (www.freebsd.org): endrequest
11-Aug-2020 02:09:38.008 client @0x803811000 (no-peer): udprecv
11-Aug-2020 02:09:38.008 client @0x803811000 127.0.0.1#24921: UDP request
11-Aug-2020 02:09:38.008 client @0x803811000 127.0.0.1#24921: using view '_default'
11-Aug-2020 02:09:38.008 client @0x803811000 127.0.0.1#24921: request is not signed
11-Aug-2020 02:09:38.008 client @0x803811000 127.0.0.1#24921: recursion available
11-Aug-2020 02:09:38.008 client @0x803811000 127.0.0.1#24921: query
11-Aug-2020 02:09:38.008 client @0x803811000 127.0.0.1#24921 (www.freebsd.org): servfail cache hit www.freebsd.org/A (CD=0)
11-Aug-2020 02:09:38.008 client @0x803811000 127.0.0.1#24921 (www.freebsd.org): query failed (SERVFAIL) for www.freebsd.org/IN/A at query.c:7077
11-Aug-2020 02:09:38.008 client @0x803811000 127.0.0.1#24921 (www.freebsd.org): error
11-Aug-2020 02:09:38.008 client @0x803811000 127.0.0.1#24921 (www.freebsd.org): send
11-Aug-2020 02:09:38.008 client @0x803811000 127.0.0.1#24921 (www.freebsd.org): sendto
11-Aug-2020 02:09:38.008 client @0x803811000 127.0.0.1#24921 (www.freebsd.org): senddone
11-Aug-2020 02:09:38.008 client @0x803811000 127.0.0.1#24921 (www.freebsd.org): next
11-Aug-2020 02:09:38.008 client @0x803811000 127.0.0.1#24921 (www.freebsd.org): endrequest
11-Aug-2020 02:09:38.008 client @0x803811000 (no-peer): udprecv
^C11-Aug-2020 02:09:40.941 shutting down
 
DNS works on both UDP and TCP. The time DNS only used UDP has long past.

Code:
 % dig @::1 www.freebsd.org

; <<>> DiG 9.16.5 <<>> @::1 www.freebsd.org
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 32865
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 4, ADDITIONAL: 9

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: 7f53f4e1784b4519ac13cd585f32be9e81e68b1f93e915ad (good)
;; QUESTION SECTION:
;www.freebsd.org.               IN      A

;; ANSWER SECTION:
www.freebsd.org.        60      IN      CNAME   wfe0.nyi.freebsd.org.
wfe0.nyi.freebsd.org.   1495    IN      A       96.47.72.84

;; AUTHORITY SECTION:
freebsd.org.            38392   IN      NS      ns3.he.net.
freebsd.org.            38392   IN      NS      ns2.he.net.
freebsd.org.            38392   IN      NS      ns5.he.net.
freebsd.org.            38392   IN      NS      ns4.he.net.

;; ADDITIONAL SECTION:
ns2.he.net.             14605   IN      AAAA    2001:470:200::2
ns3.he.net.             14604   IN      AAAA    2001:470:300::2
ns4.he.net.             14605   IN      AAAA    2001:470:400::2
ns5.he.net.             14605   IN      AAAA    2001:470:500::2
ns2.he.net.             14605   IN      A       216.218.131.2
ns3.he.net.             14604   IN      A       216.218.132.2
ns4.he.net.             14605   IN      A       216.66.1.2
ns5.he.net.             14605   IN      A       216.66.80.18

;; Query time: 57 msec
;; SERVER: ::1#53(::1)
;; WHEN: Tue Aug 11 17:51:58 CEST 2020
;; MSG SIZE  rcvd: 365
Code:
% dig chaos txt version.bind @::1

; <<>> DiG 9.16.5 <<>> chaos txt version.bind @::1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 37448
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: 43e9f2ac0661dce08a88abd45f32bf4768eccfa0c38b84d3 (good)
;; QUESTION SECTION:
;version.bind.                  CH      TXT

;; ANSWER SECTION:
version.bind.           0       CH      TXT     "9.11.21"

;; AUTHORITY SECTION:
version.bind.           0       CH      NS      version.bind.

;; Query time: 0 msec
;; SERVER: ::1#53(::1)
;; WHEN: Tue Aug 11 17:54:47 CEST 2020
;; MSG SIZE  rcvd: 103
 
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