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=== watchA ===
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<<TableOfContents()>>
DNS-OARCのサービス
https://www.dns-oarc.net/oarc/services/replysizetest
{{{
$ dig +short rs.dns-oarc.net TXT @127.0.0.1
rst.x4090.rs.dns-oarc.net.
rst.x4058.x4090.rs.dns-oarc.net.
rst.x4064.x4058.x4090.rs.dns-oarc.net.
"39.110.135.12 DNS reply size limit is at least 4090"
"Tested at 2018-11-08 03:55:30 UTC"
"39.110.135.12 sent EDNS buffer size 4096"
}}}


$ dig rs.dns-oarc.net TXT @127.0.0.1
{{{
; <<>> DiG 9.12.1 <<>> rs.dns-oarc.net TXT @127.0.0.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2708
;; flags: qr rd ra; QUERY: 1, ANSWER: 6, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;rs.dns-oarc.net.		IN	TXT

;; ANSWER SECTION:
rs.dns-oarc.net.	60	IN	CNAME	rst.x487.rs.dns-oarc.net.
rst.x487.rs.dns-oarc.net. 59	IN	CNAME	rst.x461.x487.rs.dns-oarc.net.
rst.x461.x487.rs.dns-oarc.net. 58 IN	CNAME	rst.x466.x461.x487.rs.dns-oarc.net.
rst.x466.x461.x487.rs.dns-oarc.net. 57 IN TXT	"39.110.135.12 sent EDNS buffer size 512"
rst.x466.x461.x487.rs.dns-oarc.net. 57 IN TXT	"39.110.135.12 DNS reply size limit is at least 487"
rst.x466.x461.x487.rs.dns-oarc.net. 57 IN TXT	"Tested at 2018-11-08 03:53:40 UTC"

;; Query time: 4728 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Thu Nov 08 12:53:40 JST 2018
;; MSG SIZE  rcvd: 274
}}}

$ dig rs.dns-oarc.net TXT @127.0.0.3
{{{
; <<>> DiG 9.12.1 <<>> rs.dns-oarc.net TXT @127.0.0.3
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 32551
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1220
;; QUESTION SECTION:
;rs.dns-oarc.net.		IN	TXT

;; Query time: 564 msec
;; SERVER: 127.0.0.3#53(127.0.0.3)
;; WHEN: Thu Nov 08 12:56:44 JST 2018
;; MSG SIZE  rcvd: 44
}}}
== ??? ==
https://twitter.com/tss_ontap_o/status/1060335417101180928

MTU or EDNS size ?
{{{
DNSLAB.JP: 1220
FR: 1432
NL: 4096
JP: 4096
COM: 4096
IIJ ; 4096
OCN ; 4096
SO-NET ; 4096
JPNIC : 4096
ONAMAE: 4096
9:57 - 2018年11月8日 
}}}
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