Interesting: it sends the signature before the SOA (and it breaks at least one DNS program - one of mine, shame):
% dig @ns02.one.com. SOA masters-consultants.fr. ; <<>> DiG 9.9.5-9+deb8u3-Debian <<>> @ns02.one.com. SOA masters-consultants.fr. ; (2 servers found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 51995 ;; flags: qr aa rd; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags: do; udp: 1680 ;; QUESTION SECTION: ;masters-consultants.fr. IN SOA ;; ANSWER SECTION: masters-consultants.fr. 14400 IN RRSIG SOA 8 2 14400 ( 20160121000000 20151231000000 58536 masters-consultants.fr. FOZbAQLnjdq9GPIvAJWUi5LURWMBubbFAMj6q/GVn2mu jdU8IjNL+9+pxY/hZCEFd2Fpubkslvl161q6eYXR3Po0 xbI54ZDVvGOvUG/7zhHhwZKTYfoksjQdGjrwfyvdg8F0 JcMV8v0jd8433Vm+d7VkSeomfbMXOlImKIUutQ1KqlBR rP0tiuhzXWNZmb8jL4nPg46kc/sqmObbQW2Ujg== ) masters-consultants.fr. 14400 IN SOA ns01.one.com. hostmaster.one.com. ( 2016010811 ; serial 14400 ; refresh (4 hours) 3600 ; retry (1 hour) 1209600 ; expire (2 weeks) 900 ; minimum (15 minutes) ) ;; Query time: 154 msec ;; SERVER: 2001:67c:28cc::138#53(2001:67c:28cc::138) ;; WHEN: Mon Jan 11 22:19:03 CET 2016 ;; MSG SIZE rcvd: 324 _______________________________________________ DNSOP mailing list DNSOP@ietf.org https://www.ietf.org/mailman/listinfo/dnsop