[Dnsmasq-discuss] server forwarding all traffic to parents after a successful PTR query of itself

2010-02-17 Thread Alberto Cuesta-Canada
Hi guys, I saw a weird scenario in one of our dnsmasq servers yesterday. As the logs below show, the server was all happy doing its thing, until a set of PTR queries came from normal servers in our network. The last of it would ask for the hostname of the dns server giving the IP, and from

Re: [Dnsmasq-discuss] server forwarding all traffic to parents after a successful PTR query of itself

2010-02-17 Thread Simon Kelley
Alberto Cuesta-Canada wrote: Hi guys, I saw a weird scenario in one of our dnsmasq servers yesterday. As the logs below show, the server was all happy doing its thing, until a set of PTR queries came from normal servers in our network. The last of it would ask for the hostname of the dns

Re: [Dnsmasq-discuss] server forwarding all traffic to parents after a successful PTR query of itself

2010-02-17 Thread Alberto Cuesta-Canada
Hi Simon, 2.47 Cheers, Alberto Cuesta-Canada GaaS Team Lead Excelian Ltd. +44 (0) 7942633361 From: Simon Kelley [mailto:si...@thekelleys.org.uk] Sent: Wed 17/02/2010 09:46 To: Alberto Cuesta-Canada Cc: dnsmasq-discuss@lists.thekelleys.org.uk; Grid Support

Re: [Dnsmasq-discuss] server forwarding all traffic to parents after a successful PTR query of itself

2010-02-17 Thread Simon Kelley
Alberto Cuesta-Canada wrote: Hi guys, I saw a weird scenario in one of our dnsmasq servers yesterday. As the logs below show, the server was all happy doing its thing, until a set of PTR queries came from normal servers in our network. The last of it would ask for the hostname of the dns

Re: [Dnsmasq-discuss] server forwarding all traffic to parents after a successful PTR query of itself

2010-02-17 Thread Alberto Cuesta-Canada
Hi Simon, the parents of 250 (my dnsmasq server) have forwarding rules for the dselgrid.local domain, that I run. So I assumed that the queries pushed upstream would be routed down again, and timeout in a loop. That said, in the logs I could still see successful PTR and A queries,

Re: [Dnsmasq-discuss] server forwarding all traffic to parents after a successful PTR query of itself

2010-02-17 Thread Simon Kelley
Alberto Cuesta-Canada wrote: Hi Simon, the parents of 250 (my dnsmasq server) have forwarding rules for the dselgrid.local domain, that I run. So I assumed that the queries pushed upstream would be routed down again, and timeout in a loop. Ahh, that could easily be the problem. If you

Re: [Dnsmasq-discuss] server forwarding all traffic to parents after a successful PTR query of itself

2010-02-17 Thread Alberto Cuesta-Canada
Cool, that makes a lot of sense. I'm actually reengineering the DNS infrastructure here, so it will be easy to account for and trace that at this stage. I'll let you know when I find the rogue queries, many thanks, Alberto Cuesta-Canada GaaS Team Lead Excelian Ltd. +44 (0) 7942633361