[Yeti DNS Discuss] Five additional servers added to Yeti testbed & an bug finding on priming response

Stephane Bortzmeyer bortzmeyer at nic.fr
Wed May 4 09:34:45 UTC 2016


On Wed, May 04, 2016 at 10:59:10AM +0200,
 Stephane Bortzmeyer <bortzmeyer at nic.fr> wrote 
 a message of 91 lines which said:

> dahu1 now sends everything (it requires working IPv6
> fragmentation...):

Here are the sizes (in reverse order) of priming responses from Yeti
root name servers:

1) Without DNSSEC

% sh priming-size.sh                                       
yeti-ns3.dns-lab.net. 1400
yeti-ns2.dns-lab.net. 1400
yeti-ns1.dns-lab.net. 1400
yeti-ns.wide.ad.jp. 1400
yeti-ns.tisf.net. 1400
yeti-dns01.dnsworkshop.org. 1400
ns-yeti.bondis.org. 1400
dahu1.yeti.eu.org. 1400
ca978112ca1bbdcafac231b39a23dc.yeti-dns.net. 1400
bii.dns-lab.net. 1400
3f79bb7b435b05321651daefd374cd.yeti-dns.net. 1400
3e23e8160039594a33894f6564e1b1.yeti-dns.net. 1400
2e7d2c03a9507ae265ecf5b5356885.yeti-dns.net. 1400
18ac3e7343f016890c510e93f93526.yeti-dns.net. 1400
yeti.aquaray.com. 1204
yeti-ns.as59715.net. 1204
yeti.ipv6.ernet.in. 756
yeti.bofh.priv.at. 756
yeti-ns.switch.ch. 756
yeti-ns.lab.nic.cl. 756
yeti-ns.ix.ru. 756
yeti-ns.conit.co. 28
dahu2.yeti.eu.org. 

(The last two are problems, to address)

2) With DNSSEC

% sh priming-size.sh
dahu2.yeti.eu.org. 2017
yeti-ns3.dns-lab.net. 1558
yeti-ns2.dns-lab.net. 1558
yeti-ns1.dns-lab.net. 1558
yeti-ns.wide.ad.jp. 1558
yeti-ns.tisf.net. 1558
yeti-dns01.dnsworkshop.org. 1558
ns-yeti.bondis.org. 1558
dahu1.yeti.eu.org. 1558
ca978112ca1bbdcafac231b39a23dc.yeti-dns.net. 1558
bii.dns-lab.net. 1558
3f79bb7b435b05321651daefd374cd.yeti-dns.net. 1558
3e23e8160039594a33894f6564e1b1.yeti-dns.net. 1558
2e7d2c03a9507ae265ecf5b5356885.yeti-dns.net. 1558
18ac3e7343f016890c510e93f93526.yeti-dns.net. 1558
yeti.aquaray.com. 1222
yeti-ns.as59715.net. 1222
yeti.ipv6.ernet.in. 914
yeti.bofh.priv.at. 914
yeti-ns.switch.ch. 914
yeti-ns.lab.nic.cl. 914
yeti-ns.ix.ru. 914
yeti-ns.conit.co. 28

The script was:

#!/bin/sh

NS=$(dig +short +nodnssec +edns +bufsize=4096 NS .)
for ns in ${NS}; do
    resp_size=$(dig +dnssec +edns +bufsize=4096 @$ns NS . | grep "MSG SIZE"  |cut -d' ' -f 6)
    echo "$ns $resp_size"
done | sort -n -r -k2


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