>>>>colostate.edu. 172800 IN NS dns1.colostate.edu. >>>>colostate.edu. 172800 IN NS dns3.colostate.edu. >>>>;; Received 119 bytes from 192.41.162.30#53(l.edu-servers.net) in 78 ms >>>> >>>>www.cloudsat.cira.colostate.edu. 3600 IN CNAME dpc.cira.colostate.edu. >>>>dpc.cira.colostate.edu. 3600 IN A 129.82.109.62 >>>>;; Received 83 bytes from 129.82.103.121#53(dns1.colostate.edu) in 36 ms > >>In article <mailman.812.1463666011.73610.bind-us...@lists.isc.org>, >> Matus UHLAR - fantomas <uh...@fantomas.sk> wrote: >>> often a problem of invalid NS delegation, or bad TTL (A record for a server >>> expires before NS record). > > On 19.05.16 15:31, Sam Wilson wrote: >>Glue A records for the nameservers have 172800 TTL, authoritative A >>records have 1200. > > that's it! > > ;; ANSWER SECTION: > colostate.edu. 3600 IN NS dns3.colostate.edu. > colostate.edu. 3600 IN NS dns1.colostate.edu. > > ;; ADDITIONAL SECTION: > dns3.colostate.edu. 1200 IN A 129.82.103.111 > dns1.colostate.edu. 1200 IN A 129.82.103.121 > > after 1200 seconds, the A records expire, but the NS records don't. > > Next 2400 seconds you know that you have to ask dns3.colostate.edu and > dns1.colostate.edu, but you can't find their IPs, because ... you don't > know their IPs. > > while some DNS servers can cope with that, it's still broken setup.
Our server here running BIND 9.10.3-P4 seems to handle it OK. Do some versions of Bind work with this broken setup while other versions do not? I wonder what versions of Bind are running on the two servers that do work and what versions on the two that do not. > -- > Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/ > Warning: I wish NOT to receive e-mail advertising to this address. > Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. > I feel like I'm diagonally parked in a parallel universe. Tom Schulz Applied Dynamics Intl. sch...@adi.com _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users