LinuxSA Mailing list archives

  From: Alan Kennington <akenning@topology.org>
  To  : LinuxSA <linuxsa@linuxsa.org.au>
  Date: Sun, 10 Jun 2001 01:11:59 +0930

Re: Bind 9 and BPD secondary

On Sat, Jun 09, 2001 at 01:36:01PM +0930, Steve Sloan wrote:
> 
> I am trying to get Bind 9 on RH7.1 to transfer a primary zone to a secondary
> on BPD,
> 
> The log tells me that there are no errors but it doesn't even appear to try
> and do a transfer,
> I have tryed adding options like notify and also-notify in the named.conf
> file but still no go.


Steve,

Here's another comment on your query.
I ran tcpdump while changing a zone file (topoz.net), and then
sent a HUP to "named", and got this:

dog /var/named# tcpdump -i ppp0 port 53 and host lns1.telstra.net or net 139.130.4.0/24 
[....]

====================================================================
23:40:32.851206 alanke.lnk.telstra.net.4840 > ns1.telstra.net.domain: 20890 [b2&3=0x10] [1au] AAAA? ns1.telstra.net. (44) (DF)
23:40:32.989553 ns1.telstra.net.domain > alanke.lnk.telstra.net.4840: 20890 FormErr- [0q] 0/0/0 (12)
23:40:32.990124 alanke.lnk.telstra.net.4840 > ns1.telstra.net.domain: 5224 AAAA? ns1.telstra.net. (33) (DF)
23:40:33.149545 ns1.telstra.net.domain > alanke.lnk.telstra.net.4840: 5224*- 0/1/0 (83)
23:40:33.151797 alanke.lnk.telstra.net.4840 > ns1.telstra.net.domain: 34111 notify [b2&3=0x2400] [1a] SOA? topoz.net. (88) (DF)
23:40:33.299547 ns1.telstra.net.domain > alanke.lnk.telstra.net.4840: 34111 notify Refused- 0/0/0 (27)  
====================================================================

And some time later, there's an apparently regularly scheduled query and response:

====================================================================
01:05:45.369543 lns1.telstra.net.2948 > dog.topology.org.domain: 62101 SOA? topoz.net. (27)
01:05:45.370640 dog.topology.org.domain > lns1.telstra.net.2948: 62101*- 1/3/2 SOA (183) (DF)

01:05:45.789548 ns1.telstra.net.3678 > dog.topology.org.domain: S 2899771684:2899771684(0) win 65535 <mss 1460,nop,wscale 1,nop,nop,timestamp 332732140 0> (DF)
01:05:45.789754 dog.topology.org.domain > ns1.telstra.net.3678: S 2069916326:2069916326(0) ack 2899771685 win 5792 <mss 1460,nop,nop,timestamp 364878865 332732140,nop,wscale 0> (DF)
01:05:45.959565 ns1.telstra.net.3678 > dog.topology.org.domain: . 1:1(0) ack 1 win 33304 <nop,nop,timestamp 332732156 364878865> (DF)
01:05:45.969557 ns1.telstra.net.3678 > dog.topology.org.domain: P 1:30(29) ack 1 win 33304 <nop,nop,timestamp 332732156 364878865> (DF)
01:05:45.969674 dog.topology.org.domain > ns1.telstra.net.3678: . 1:1(0) ack 30 win 5792 <nop,nop,timestamp 364878883 332732156> (DF)
01:05:45.971711 dog.topology.org.domain > ns1.telstra.net.3678: P 1:186(185) ack 30 win 5792 <nop,nop,timestamp 364878883 332732156> (DF)
01:05:46.159558 ns1.telstra.net.3678 > dog.topology.org.domain: . 30:30(0) ack 186 win 33211 <nop,nop,timestamp 332732177 364878883> (DF)
01:05:46.179551 ns1.telstra.net.3678 > dog.topology.org.domain: P 30:59(29) ack 186 win 33304 <nop,nop,timestamp 332732177 364878883> (DF)
01:05:46.219577 dog.topology.org.domain > ns1.telstra.net.3678: . 186:186(0) ack 59 win 5792 <nop,nop,timestamp 364878908 332732177> (DF)
01:05:46.239106 dog.topology.org.domain > ns1.telstra.net.3678: P 186:501(315) ack 59 win 5792 <nop,nop,timestamp 364878909 332732177> (DF)
01:05:46.439556 ns1.telstra.net.3678 > dog.topology.org.domain: . 59:59(0) ack 501 win 33146 <nop,nop,timestamp 332732206 364878909> (DF)
01:05:46.449551 ns1.telstra.net.3678 > dog.topology.org.domain: F 59:59(0) ack 501 win 33304 <nop,nop,timestamp 332732206 364878909> (DF)
01:05:46.450298 dog.topology.org.domain > ns1.telstra.net.3678: F 501:501(0) ack 60 win 5792 <nop,nop,timestamp 364878931 332732206> (DF)
01:05:46.599558 ns1.telstra.net.3678 > dog.topology.org.domain: . 60:60(0) ack 502 win 33304 <nop,nop,timestamp 332732222 364878931> (DF)      
====================================================================

I.e. The BP secondary server thing lns1.telstra.net first does a regular query over UDP.
It then opens a TCP connection from IP interface ns1.telstra.net
to my primary.
And that fetches the relevant zone info.

And that's what should happen in your system.
I.e. the BP machine does a regularly scheduled query to your machine,
and if something has changed, it opens a TCP connection to fetch
the new data.

Cheers,
Alan Kennington.

--------------------------------------------------------------------
    name: Dr. Alan Kennington
  e-mail: akenning@topology.org
 website: http://www.topology.org/
    city: Adelaide, South Australia
  coords: 34.88051 S, 138.59334 E
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