Why does plusnet give more info than other dns servers
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Why does plusnet give more info than other dns servers
28-05-2014 11:22 PM
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Tracing to yahoo.com via 212.159.6.9, maximum of 3 retries
212.159.6.9 (212.159.6.9) Got answer
|\___ ns5.yahoo.com [yah...
via 208.67.222.220, maximum of 3 retries
208.67.222.220 (208.67.222.220) Got answer
208.67.222.220 (...
via 8.8.8.8, maximum of 3 retries
8.8.8.8 (8.8.8.8.) Got answer
8.8.8.8 (8.8.8.8.) ...
via 208.67.222.123, maximum of 3 retries
208.67.222.123 (208.67.222.123) Got answer
208.67.222.123 (...
via 212.159.6.9, maximum of 3 retries
212.159.6.9 (212.159.6.9)
|\___ dns.iad.llns.net [llnw.net] (...
Re: Why does plusnet give more info than other dns servers
29-05-2014 10:29 AM
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Quote minimal-responses: <yes or no>
If yes, Unbound doesn't insert authority/additional sections
into response messages when those sections are not required.
This reduces response size significantly, and may avoid TCP
fallback for some responses. This may cause a slight speedup.
The default is no, because the DNS protocol RFCs mandate these
sections, and the additional content could be of use and save
roundtrips for clients.
Re: Why does plusnet give more info than other dns servers
29-05-2014 5:51 PM
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The little pi is working pretty well these days, it's a case of finding a good Kernel I guess. Out of interest though I'm still curious why more info seems to be given out via plusnet v/s other popular servers.
[tt] thread0.num.queries=119013
thread0.num.cachehits=87748
thread0.num.cachemiss=31265
thread0.num.prefetch=2083
thread0.num.recursivereplies=31265
thread0.requestlist.avg=0.933909
thread0.requestlist.max=12
thread0.requestlist.overwritten=0
thread0.requestlist.exceeded=0
thread0.requestlist.current.all=0
thread0.requestlist.current.user=0
thread0.recursion.time.avg=0.077400
thread0.recursion.time.median=0.0321775
total.num.queries=119013
total.num.cachehits=87748
total.num.cachemiss=31265
total.num.prefetch=2083
total.num.recursivereplies=31265
total.requestlist.avg=0.933909
total.requestlist.max=12
total.requestlist.overwritten=0
total.requestlist.exceeded=0
total.requestlist.current.all=0
total.requestlist.current.user=0
total.recursion.time.avg=0.077400
total.recursion.time.median=0.0321775
time.now=1401381325.066039
time.up=1839023.362245
time.elapsed=1824615.456262[/tt].
Re: Why does plusnet give more info than other dns servers
29-05-2014 6:49 PM
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What tool are you using?
Is it something like dig +trace
Quote ; <<>> DiG 9.8.6-P1 <<>> +trace yahoo.com @212.159.6.9
;; global options: +cmd
. 484570 IN NS b.root-servers.net.
. 484570 IN NS f.root-servers.net.
. 484570 IN NS d.root-servers.net.
. 484570 IN NS a.root-servers.net.
. 484570 IN NS j.root-servers.net.
. 484570 IN NS l.root-servers.net.
. 484570 IN NS k.root-servers.net.
. 484570 IN NS h.root-servers.net.
. 484570 IN NS e.root-servers.net.
. 484570 IN NS m.root-servers.net.
. 484570 IN NS c.root-servers.net.
. 484570 IN NS g.root-servers.net.
. 484570 IN NS i.root-servers.net.
;; Received 228 bytes from 212.159.6.9#53(212.159.6.9) in 390 ms
com. 172800 IN NS a.gtld-servers.net.
com. 172800 IN NS b.gtld-servers.net.
com. 172800 IN NS c.gtld-servers.net.
com. 172800 IN NS d.gtld-servers.net.
com. 172800 IN NS e.gtld-servers.net.
com. 172800 IN NS f.gtld-servers.net.
com. 172800 IN NS g.gtld-servers.net.
com. 172800 IN NS h.gtld-servers.net.
com. 172800 IN NS i.gtld-servers.net.
com. 172800 IN NS j.gtld-servers.net.
com. 172800 IN NS k.gtld-servers.net.
com. 172800 IN NS l.gtld-servers.net.
com. 172800 IN NS m.gtld-servers.net.
;; Received 487 bytes from 199.7.83.42#53(l.root-servers.net) in 375 ms
yahoo.com. 172800 IN NS ns1.yahoo.com.
yahoo.com. 172800 IN NS ns5.yahoo.com.
yahoo.com. 172800 IN NS ns2.yahoo.com.
yahoo.com. 172800 IN NS ns3.yahoo.com.
yahoo.com. 172800 IN NS ns4.yahoo.com.
;; Received 197 bytes from 192.42.93.30#53(g.gtld-servers.net) in 296 ms
yahoo.com. 1800 IN A 98.138.253.109
yahoo.com. 1800 IN A 206.190.36.45
yahoo.com. 1800 IN A 98.139.183.24
yahoo.com. 172800 IN NS ns5.yahoo.com.
yahoo.com. 172800 IN NS ns6.yahoo.com.
yahoo.com. 172800 IN NS ns4.yahoo.com.
yahoo.com. 172800 IN NS ns3.yahoo.com.
yahoo.com. 172800 IN NS ns1.yahoo.com.
yahoo.com. 172800 IN NS ns2.yahoo.com.
;; Received 279 bytes from 203.84.221.53#53(ns3.yahoo.com) in 218 ms
Re: Why does plusnet give more info than other dns servers
29-05-2014 7:06 PM
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sudo dnstracer -s 8.8.8.8 -o -4 yahoo.com
Re: Why does plusnet give more info than other dns servers
29-05-2014 7:18 PM
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http://homepage.ntlworld.com/jonathan.deboynepollard/FGA/dnstracer-incorrect-algorithm.html
Don't you have dig in linux
Re: Why does plusnet give more info than other dns servers
29-05-2014 8:39 PM
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Quickly runs away while typing: sudo apt-get purge dnstracer............
Re: Why does plusnet give more info than other dns servers
29-05-2014 11:16 PM
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I have never seen anything less than 0.03 Previously
[tt]
thread0.num.queries=333
thread0.num.cachehits=287
thread0.num.cachemiss=46
thread0.num.prefetch=0
thread0.num.recursivereplies=46
thread0.requestlist.avg=0.0434783
thread0.requestlist.max=1
thread0.requestlist.overwritten=0
thread0.requestlist.exceeded=0
thread0.requestlist.current.all=0
thread0.requestlist.current.user=0
thread0.recursion.time.avg=0.026126
thread0.recursion.time.median=0.0268516
total.num.queries=333
total.num.cachehits=287
total.num.cachemiss=46
total.num.prefetch=0
total.num.recursivereplies=46
total.requestlist.avg=0.0434783
total.requestlist.max=1
total.requestlist.overwritten=0
total.requestlist.exceeded=0
total.requestlist.current.all=0
total.requestlist.current.user=0
total.recursion.time.avg=0.026126
total.recursion.time.median=0.0268516
time.now=1401401139.785368
time.up=1858838.081574
time.elapsed=1844430.175591[/tt]
Re: Why does plusnet give more info than other dns servers
30-05-2014 2:13 PM
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You've tempted me to have another go.
Which version of linux are you running -- download link if you have it please.
Re: Why does plusnet give more info than other dns servers
30-05-2014 4:44 PM
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512MB Version Rpi
Linux 3.10.37+ #669 PREEMPT Tue Apr 15 14:44:32 BST 2014 armv6l GNU/Linux
Apr 23 2014 00:09:02
Copyright (c) 2012 Broadcom
version 8c6eeb8ba935907264625ed86287962173a60e55
Memory split GPU=16
./cpustatus
Temperature: 43.9 C
Voltage: 1.25 V (+0.5)
Min speed: 900 MHz
Max speed: 900 MHz
Current speed: 900 MHzersion
Governor: ondemand
#!/bin/bash
# cpustatus
#
# Prints the current state of the CPU like temperature, voltage and speed.
# The temperature is reported in degrees Celsius (C) while
# the CPU speed is calculated in megahertz (MHz).
function convert_to_MHz {
let value=$1/1000
echo "$value"
}
function calculate_overvolts {
# We can safely ignore the integer
# part of the decimal argument
# since it's not realistic to run the Pi
# at voltages higher than 1.99 V
let overvolts=${1#*.}-20
echo "$overvolts"
}
temp=$(vcgencmd measure_temp)
temp=${temp:5:4}
volts=$(vcgencmd measure_volts)
volts=${volts:5:4}
if [ $volts != "1.20" ]; then
overvolts=$(calculate_overvolts $volts)
fi
minFreq=$(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq)
minFreq=$(convert_to_MHz $minFreq)
maxFreq=$(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq)
maxFreq=$(convert_to_MHz $maxFreq)
freq=$(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq)
freq=$(convert_to_MHz $freq)
governor=$(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor)
echo "Temperature: $temp C"
echo -n "Voltage: $volts V"
[ $overvolts ] && echo " (+0.$overvolts overvolt)" || echo -e "\r"
echo "Min speed: $minFreq MHz"
echo "Max speed: $maxFreq MHz"
echo "Current speed: $freq MHz"
echo "Governor: $governor"
exit 0
Great little script, i need to find the source and paste the link.
Just shout if you want a copy of my unbound.conf
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