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<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3">Dear all, </font></p><p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"><br></font></p><p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> My apologies for sending the notes and action items for this call late. </font></p><p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"><br></font></p><p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3">Steve</font></p><p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"><br></font></p><p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3">23 April 2015 RSSAC Caucus TTL WP Call</font></p><p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"><br></font></p><p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"><b>Participants:</b> Duane Wessels (leader), Jaap Akkerhuis, John Bond, Joe Abley, Matt Thomas. Staff: Steve Sheng, Carlos Reyes, Barbara Roseman, Kathy Schnitt</font></p><p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"><br></font></p><p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"><b>Apologies:</b> Brian Dickson, Warren Kumari</font></p><p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"><br></font></p><p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"><b>Action items: </b></font></p><ul><li><font face="Calibri">Matt and Shumon to rerun the test measuring the DS and DNSKEY TTLS for TLDs with a more recent copy of the root zone file. Also perform the analysis to compare NS and DNSKEY on a per TLD basis to see if they are the same or different. </font></li><li><font face="Calibri">Jaap to continue the task of finding the recursive resolver application's TTL settings. Jaap to provide some text about measurements of TTL in relation to Warren’s contribution. </font></li><li><font face="Calibri">Each of the streams of work to provide an ETA for their efforts. </font></li><li><font face="Calibri">Duane to send an email to the WP regarding 6 May meeting time, if no objections the next meeting will be 6 May. </font></li></ul><p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"><b>Decision: </b></font></p><ul><li><span style="color: rgb(0, 0, 0); font-style: normal; font-weight: normal; text-decoration: none;">For next meeting, the working group will create the report document and puttings things together. </span></li></ul><div><span style="color: rgb(0, 0, 0); font-family: Calibri; font-size: 14px; font-style: normal; font-weight: normal; text-decoration: none;"><br></span></div><p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"><b>Notes:</b></font></p><p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Kathy Schnitt:Apology: Brian Dickson<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> jaap akkerhuis:No sound no mike<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Kathy Schnitt:Japp sound on AC is working now<o:p></o:p></font></p>
<p class="MsoNormal"><font face="Calibri" size="3"> Matt: Shumon and I measured the TTL of DS and DNSKEY of delegated TLDs,
these came from root zone file in March<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> the DS key TTL is uniform. There were some DS keys that are absent. The DNSKEY, there is a non-uniform TTL distribution. Majority is 86400. A large portion of them have smaller values, varing from
TTLs in ccTLDs. We plan to rerun the test, as quite a few TLDs have been
delegated.</font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Duane: The graph you send are specific to DNSKEY TTLs,
right?<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Duane: have you done work on NS TTLs?<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Duane: Matt is having some connectivity issues.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Duane: This is good. One thing is compare to compare NS
and DNSKEY on a per TLD basis.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Duane: To see if they are the same or they are different.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Matt: Sure.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> ACTION ITEM: Matt to compare NS and DNSKEY TTL for the
root zone.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> ACTION: With new zone file.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Jaap: It is too early to draw conclusions.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Duane: Yes, I agree. Since most of the TTL is one day.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Matt: Duane and I are doing some analysis on the DITL
data.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Matt: As it stand, we are about half way done.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Matt: We use the root zone file to determine delegated
TLDs.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Matt: We calculate, minimum, maximum, mean, median time
delta of the queries.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Kathy Schnitt:Warren is unable to make the call today.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Matt: This graph shows the distribution of the queries by
TLD.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Matt: The number of requests measured by IP.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Duane: As we are writing the report on TTL, we need to
think about what group of users are most important.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Duane: One thing is to profile the IP by query types.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Duane: To identify recursive resolvers.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Duane: The problem of identifying typical is that they
are all over the map.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Duane: It is difficult to define normal vs. abnormal.</font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> John: Looking at that, it seems there is no impact if
changing TTL from 2 day to 1 day.</font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Duane: That seems to be my understanding, but this affect
clients, we need to see how many queries are affected.</font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Duane: Jaap, do you have any news for us?<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Jaap: I looked at warren's measurements, but I think some
of it may not be measuring the right thing.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Jaap: [not captured]<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Duane: It would be good to document this behavior.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> ACTION: Jaap to continue the task on the recursive
resolver application TTL.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Jaap: Also Peter Koch did not respond to my requests for
root zone's prior 1999.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Duane: Let's look at SOA.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> John: I have put my contribution in the email, my
recommendation is change some values.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Duane: I tend to agree.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Duane: One way is to lower the zone expiry time from 7
days to 3 days at least to solve this problem.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Duane: The other to increase the validity period to 20
days.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Duane: The other option is to generate more signatures
more frequently.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> John: My gut feeling here is changing the expiray in SOA
seem to make the most sense.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> That value seems a little bit too high, I woudl prefer
root zone to expire their data earlier than 7 days.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> The root server operators should ensure their servers
much earlier than expiry period.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Joe: There is also a large part of the population not
validating DNSSEC.</font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Duane: I have some experience with this kind of thing,
the tool is designed to tell whether you were using a validating recusive name
server. The first time you query it, it responded with bad response, and
expected you to try again.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Duane: This works great for BIND. It works just ok for
UNBOUND. It works terribly for Nominom's implementation.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> as they only tried once.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Duane: I think there is nothing in the protocol that
mandates retrial numbers.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Duane: I suspect we will need RSSAC to choose.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Duane: Are there any last minute things to talk about.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Duane: I will send out a message to the list. For each
item, let's get an update progress and ETA. I think maybe in about 2 weeks we should start creating the report document and puttings
things together. That would give us three weeks before our deadline.</font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> John: My item is complete, but Joe raised a good point.
How caching resolvers respond when they get an expired response.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> Duane: One administrivia in two weeks, I will be heading
to OARC meeting. Can we reschedule that.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> to the day before?<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> ACTION: Duane to send a note asking people's flexibility
on Wed 6 May.<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> jabley:thanks!<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><font face="Calibri" size="3"> jaap akkerhuis:Later!<o:p></o:p></font></p>
<p class="MsoNormal" style="color: rgb(0, 0, 0);"><o:p><font face="Calibri" size="3"> </font></o:p></p>
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