Unstable behavior on *.br.freebsd.org

[Vinícius Zavam]

d5u86 at box:~ % dig +short freebsd.org NS
ns2.isc-sns.com.
ns1.isc-sns.net.
ns3.isc-sns.info.



d5u86 at box:~ % dig +short br.freebsd.org NS
;; connection timed out; no servers could be reached



d5u86 at box:~ % dig +short ns1.isc-sns.net.
72.52.71.1



d5u86 at box:~ % drill br.freebsd.org @72.52.71.1 NS
;; ->>HEADER<<- opcode: QUERY, rcode: NOERROR, id: 48454
;; flags: qr rd ; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 1
;; QUESTION SECTION:
;; br.freebsd.org.      IN      NS

;; ANSWER SECTION:

;; AUTHORITY SECTION:
br.freebsd.org. 600     IN      NS      styx.iqm.unicamp.br.
br.freebsd.org. 600     IN      NS      ns.br.freebsd.org.

;; ADDITIONAL SECTION:
ns.br.freebsd.org.      600     IN      A       143.106.13.62

;; Query time: 99 msec
;; SERVER: 72.52.71.1
;; WHEN: Tue Mar 31 12:03:35 2015
;; MSG SIZE  rcvd: 98



d5u86 at box:~ % dig @143.106.13.62 ftp.br.freebsd.org

; <<>> DiG 9.10.2 <<>> @143.106.13.62 ftp.br.freebsd.org
; (1 server found)
;; global options: +cmd
;; connection timed out; no servers could be reached



d5u86 at box:~ % dig +short styx.iqm.unicamp.br.
143.106.51.37



d5u86 at box:~ % dig @143.106.51.37 ftp.br.freebsd.org

; <<>> DiG 9.10.2 <<>> @143.106.51.37 ftp.br.freebsd.org
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 58903
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;ftp.br.freebsd.org.            IN      A

;; Query time: 47 msec
;; SERVER: 143.106.51.37#53(143.106.51.37)
;; WHEN: Tue Mar 31 12:04:22 BRT 2015
;; MSG SIZE  rcvd: 47



d5u86 at box:~ % time host styx.iqm.unicamp.br.
styx.iqm.unicamp.br has address 143.106.51.37
0.000u 0.002s 0:00.18 0.0%      0+0k 0+0io 0pf+0w



d5u86 at box:~ % time host ns.br.freebsd.org.
;; connection timed out; no servers could be reached
0.000u 0.002s 0:10.11 0.0%      0+0k 0+0io 0pf+0w



-- 
Vinícius Zavam
profiles.google.com/egypcio