[Ext] Re: G root not responding on UDP?
Jim Glassford
jmglass at iup.edu
Thu Apr 14 11:40:05 UTC 2016
fyi,
some discussion and below link from the bind mailing list on this
https://atlas.ripe.net/dnsmon/group/g-root
On 4/14/2016 7:36 AM, Nicholas Suan wrote:
> I'm see the same thing from multiple networks.
>
> $ dig NS . @g.root-servers.net
>
> ; <<>> DiG 9.9.5 <<>> NS . @g.root-servers.net
> ;; global options: +cmd
> ;; connection timed out; no servers could be reached
>
> On Thu, Apr 14, 2016 at 7:30 AM, Anurag Bhatia <me at anuragbhatia.com> wrote:
>> Hello everyone
>>
>>
>> I wonder if it's just me or anyone else also finding issues in g root
>> reachability?
>>
>>
>> ICMP, trace, UDP DNS queries all timing out. Only TCP seem to work.
>>
>>
>> Trace is timing out on 208.46.37.38.
>>
>>
>>
>> traceroute to 192.112.36.4 (192.112.36.4), 64 hops max, 52 byte packets
>> 1 router01.home (172.16.0.1) 4.926 ms 1.863 ms 1.845 ms
>> 2 103.60.176.101 (103.60.176.101) 24.007 ms 24.507 ms 22.330 ms
>> 3 nsg-static-137.49.75.182-airtel.com (182.75.49.137) 64.435 ms 64.359
>> ms 66.108 ms
>> 4 182.79.206.46 (182.79.206.46) 331.787 ms
>> 182.79.206.53 (182.79.206.53) 228.497 ms
>> 182.79.222.189 (182.79.222.189) 224.966 ms
>> 5 ldn-brdr-01.qwest.net (195.66.225.34) 162.745 ms 162.139 ms 162.031
>> ms
>> 6 lon-ddos-01.inet.qwest.net (67.14.63.58) 162.138 ms 162.125 ms
>> 162.916 ms
>> 7 * * *
>> 8 chp-edge-01.inet.qwest.net (208.46.37.37) 242.819 ms 242.793 ms
>> 242.575 ms
>> 9 208.46.37.38 (208.46.37.38) 253.176 ms 253.066 ms 252.807 ms
>> 10 * * *
>> 11 * * *
>> 12 * * *
>>
>>
>>
>>
>> dig @192.112.36.4 . ns
>>
>> ; <<>> DiG 9.8.3-P1 <<>> @192.112.36.4 . ns
>> ; (1 server found)
>> ;; global options: +cmd
>> ;; connection timed out; no servers could be reached
>>
>>
>>
>>
>>
>> dig @192.112.36.4 . ns +tcp +noauth
>>
>> ; <<>> DiG 9.8.3-P1 <<>> @192.112.36.4 . ns +tcp +noauth
>> ; (1 server found)
>> ;; global options: +cmd
>> ;; Got answer:
>> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 29674
>> ;; flags: qr aa rd; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 24
>> ;; WARNING: recursion requested but not available
>>
>> ;; QUESTION SECTION:
>> ;. IN NS
>>
>> ;; ANSWER SECTION:
>> . 518400 IN NS g.root-servers.net.
>> . 518400 IN NS l.root-servers.net.
>> . 518400 IN NS f.root-servers.net.
>> . 518400 IN NS h.root-servers.net.
>> . 518400 IN NS k.root-servers.net.
>> . 518400 IN NS b.root-servers.net.
>> . 518400 IN NS c.root-servers.net.
>> . 518400 IN NS e.root-servers.net.
>> . 518400 IN NS j.root-servers.net.
>> . 518400 IN NS i.root-servers.net.
>> . 518400 IN NS m.root-servers.net.
>> . 518400 IN NS a.root-servers.net.
>> . 518400 IN NS d.root-servers.net.
>>
>> ;; ADDITIONAL SECTION:
>> a.root-servers.net. 3600000 IN A 198.41.0.4
>> b.root-servers.net. 3600000 IN A 192.228.79.201
>> c.root-servers.net. 3600000 IN A 192.33.4.12
>> d.root-servers.net. 3600000 IN A 199.7.91.13
>> e.root-servers.net. 3600000 IN A 192.203.230.10
>> f.root-servers.net. 3600000 IN A 192.5.5.241
>> g.root-servers.net. 3600000 IN A 192.112.36.4
>> h.root-servers.net. 3600000 IN A 198.97.190.53
>> i.root-servers.net. 3600000 IN A 192.36.148.17
>> j.root-servers.net. 3600000 IN A 192.58.128.30
>> k.root-servers.net. 3600000 IN A 193.0.14.129
>> l.root-servers.net. 3600000 IN A 199.7.83.42
>> m.root-servers.net. 3600000 IN A 202.12.27.33
>> a.root-servers.net. 3600000 IN AAAA 2001:503:ba3e::2:30
>> b.root-servers.net. 3600000 IN AAAA 2001:500:84::b
>> c.root-servers.net. 3600000 IN AAAA 2001:500:2::c
>> d.root-servers.net. 3600000 IN AAAA 2001:500:2d::d
>> f.root-servers.net. 3600000 IN AAAA 2001:500:2f::f
>> h.root-servers.net. 3600000 IN AAAA 2001:500:1::53
>> i.root-servers.net. 3600000 IN AAAA 2001:7fe::53
>> j.root-servers.net. 3600000 IN AAAA 2001:503:c27::2:30
>> k.root-servers.net. 3600000 IN AAAA 2001:7fd::1
>> l.root-servers.net. 3600000 IN AAAA 2001:500:9f::42
>> m.root-servers.net. 3600000 IN AAAA 2001:dc3::35
>>
>> ;; Query time: 259 msec
>> ;; SERVER: 192.112.36.4#53(192.112.36.4)
>> ;; WHEN: Thu Apr 14 16:59:09 2016
>> ;; MSG SIZE rcvd: 744
>>
>>
>>
>>
>>
>> Is UDP blocked recently or it has been like this from long?
>>
>>
>>
>> --
>>
>>
>> Anurag Bhatia
>> anuragbhatia.com
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