[dns-operations] It looks like .BIZ has started blocking EDNS(1) and unknown EDNS flags over IPv4.

[Mark Andrews]

Did someone decide to upgrade a firewall?

reports/tld.2016-09-24T00:00:00Z:biz. @156.154.124.65 (a.gtld.biz.): dns=ok edns=ok edns1=ok edns at 512=ok ednsopt=ok edns1opt=ok do=ok ednsflags=ok optlist=ok signed=ok,yes ednstcp=ok
reports/tld.2016-09-24T00:00:00Z:biz. @2001:502:ad09::30 (a.gtld.biz.): dns=ok edns=ok edns1=ok edns at 512=ok ednsopt=ok edns1opt=ok do=ok ednsflags=ok optlist=ok signed=ok,yes ednstcp=ok
reports/tld.2016-09-24T00:00:00Z:biz. @156.154.125.65 (b.gtld.biz.): dns=ok edns=ok edns1=ok edns at 512=ok ednsopt=ok edns1opt=ok do=ok ednsflags=ok optlist=ok signed=ok,yes ednstcp=ok
reports/tld.2016-09-24T00:00:00Z:biz. @156.154.127.65 (c.gtld.biz.): dns=ok edns=ok edns1=ok edns at 512=ok ednsopt=ok edns1opt=ok do=ok ednsflags=ok optlist=ok signed=ok,yes ednstcp=ok
reports/tld.2016-09-24T00:00:00Z:biz. @156.154.126.65 (e.gtld.biz.): dns=ok edns=ok edns1=ok edns at 512=ok ednsopt=ok edns1opt=ok do=ok ednsflags=ok optlist=ok signed=ok,yes ednstcp=ok
reports/tld.2016-09-24T00:00:00Z:biz. @2001:500:3682::12 (f.gtld.biz.): dns=ok edns=ok edns1=ok edns at 512=ok ednsopt=ok edns1opt=ok do=ok ednsflags=ok optlist=ok signed=ok,yes ednstcp=ok
reports/tld.2016-09-24T00:00:00Z:biz. @209.173.58.66 (f.gtld.biz.): dns=ok edns=ok edns1=ok edns at 512=ok ednsopt=ok edns1opt=ok do=ok ednsflags=ok optlist=ok signed=ok,yes ednstcp=ok
reports/tld.2016-09-24T00:00:00Z:biz. @156.154.128.65 (k.gtld.biz.): dns=ok edns=ok edns1=ok edns at 512=ok ednsopt=ok edns1opt=ok do=ok ednsflags=ok optlist=ok signed=ok,yes ednstcp=ok
reports/tld.2016-09-24T00:00:00Z:biz. @2001:503:e239::3:2 (k.gtld.biz.): dns=ok edns=ok edns1=ok edns at 512=ok ednsopt=ok edns1opt=ok do=ok ednsflags=ok optlist=ok signed=ok,yes ednstcp=ok
reports/tld.2016-09-25T00:00:00Z:biz. @156.154.124.65 (a.gtld.biz.): dns=ok edns=ok edns1=timeout edns at 512=ok ednsopt=ok edns1opt=timeout do=ok ednsflags=timeout optlist=ok signed=ok,yes ednstcp=ok
reports/tld.2016-09-25T00:00:00Z:biz. @2001:502:ad09::30 (a.gtld.biz.): dns=ok edns=ok edns1=ok edns at 512=ok ednsopt=ok edns1opt=ok do=ok ednsflags=ok optlist=ok signed=ok,yes ednstcp=ok
reports/tld.2016-09-25T00:00:00Z:biz. @156.154.125.65 (b.gtld.biz.): dns=ok edns=ok edns1=timeout edns at 512=ok ednsopt=ok edns1opt=timeout do=ok ednsflags=timeout optlist=ok signed=ok,yes ednstcp=ok
reports/tld.2016-09-25T00:00:00Z:biz. @156.154.127.65 (c.gtld.biz.): dns=ok edns=ok edns1=timeout edns at 512=ok ednsopt=ok edns1opt=timeout do=ok ednsflags=timeout optlist=ok signed=ok,yes ednstcp=ok
reports/tld.2016-09-25T00:00:00Z:biz. @156.154.126.65 (e.gtld.biz.): dns=ok edns=ok edns1=timeout edns at 512=ok ednsopt=ok edns1opt=timeout do=ok ednsflags=timeout optlist=ok signed=ok,yes ednstcp=ok
reports/tld.2016-09-25T00:00:00Z:biz. @2001:500:3682::12 (f.gtld.biz.): dns=ok edns=ok edns1=ok edns at 512=ok ednsopt=ok edns1opt=ok do=ok ednsflags=ok optlist=ok signed=ok,yes ednstcp=ok
reports/tld.2016-09-25T00:00:00Z:biz. @209.173.58.66 (f.gtld.biz.): dns=ok edns=ok edns1=timeout edns at 512=ok ednsopt=ok edns1opt=timeout do=ok ednsflags=timeout optlist=ok signed=ok,yes ednstcp=ok
reports/tld.2016-09-25T00:00:00Z:biz. @156.154.128.65 (k.gtld.biz.): dns=ok edns=ok edns1=timeout edns at 512=ok ednsopt=ok edns1opt=timeout do=ok ednsflags=timeout optlist=ok signed=ok,yes ednstcp=ok
reports/tld.2016-09-25T00:00:00Z:biz. @2001:503:e239::3:2 (k.gtld.biz.): dns=ok edns=ok edns1=ok edns at 512=ok ednsopt=ok edns1opt=ok do=ok ednsflags=ok optlist=ok signed=ok,yes ednstcp=ok

-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE:	+61 2 9871 4742		         INTERNET: marka at isc.org