China has it's own root nodes is confirmed long ago, we published that in our paper https://ant.isi.edu/blog/?p=362
Just pinged H-root from CERNET of China: $ ping h.root-servers.net PING h.root-servers.net (128.63.2.53) 56(84) bytes of data. 64 bytes from 128.63.2.53: icmp_seq=1 ttl=55 time=9.63 ms 64 bytes from 128.63.2.53: icmp_seq=2 ttl=55 time=9.56 ms 9ms is faster than the speed of light, given the two H-root sites are both in US and the ping source is in Shanghai. For the failure in China telecom, one possible explanation is that somehow the route to the "Chinese H-root" doesn't propagate to some server in China telecom, while the GFW has already started to drop packets from real H-root. On Tue, Apr 29, 2014 at 12:15 PM, Warren Kumari <war...@kumari.net> wrote: > On Tue, Apr 29, 2014 at 2:18 PM, bert hubert <bert.hub...@netherlabs.nl> > wrote: > > > > On 29 Apr 2014, at 20:55, Emmanuel Thierry <m...@sekil.fr> wrote: > > > >> > >> What we may observe from tests is that some dns servers failed without > an obvious connectivity problem (ping is OK). As a consequence, i think it > would be really interesting to test for instance with an arbitrary dns > server and see whether it fails or not. > >> > > > > Even root-servers that are down have been known to respond as observed > from China. Sometimes within less milliseconds than it takes to reach the > border. > > > > It is not internet as ‘we’ know it there. > > What would be interesting to see would be nsid, hostname.bind, etc > from the NS to *do* resolve. > E.g: > > dig -4 @l.root-servers.net hostname.bind CH TXT > dig -4 @l.root-servers.net . SOA +nsid > > W > > > > > > Bert > > > > _______________________________________________ > > dns-operations mailing list > > dns-operations@lists.dns-oarc.net > > https://lists.dns-oarc.net/mailman/listinfo/dns-operations > > dns-jobs mailing list > > https://lists.dns-oarc.net/mailman/listinfo/dns-jobs > _______________________________________________ > dns-operations mailing list > dns-operations@lists.dns-oarc.net > https://lists.dns-oarc.net/mailman/listinfo/dns-operations > dns-jobs mailing list > https://lists.dns-oarc.net/mailman/listinfo/dns-jobs >
_______________________________________________ dns-operations mailing list dns-operations@lists.dns-oarc.net https://lists.dns-oarc.net/mailman/listinfo/dns-operations dns-jobs mailing list https://lists.dns-oarc.net/mailman/listinfo/dns-jobs