G root not responding on UDP?

Thu Apr 14 11:36:55 UTC 2016

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