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d6fa26d0adaec6c910115be34fe7a5a5f402c14fMark Andrews<HTML
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1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User>Troubleshooting</TITLE
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1e9517ea2156b990be21f44676d3370318eacf17Tinderbox UserTITLE="BIND 9 Security Considerations"
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7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User>BIND 9 Administrator Reference Manual</TH
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7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User><A
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7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User>Prev</A
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7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User>Next</A
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1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User><H1
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User><A
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox UserNAME="ch08"
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User>Chapter 8. Troubleshooting</A
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User></H1
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User><DIV
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox UserCLASS="TOC"
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User><DL
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User><DT
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User><B
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User>Table of Contents</B
7e71f05d8643aca84914437c900cb716444507e4Tinderbox User></DT
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User><DT
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User>8.1. <A
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox UserHREF="Bv9ARM.ch08.html#AEN4733"
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User>Common Problems</A
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User></DT
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User><DT
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User>8.2. <A
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox UserHREF="Bv9ARM.ch08.html#AEN4738"
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User>Incrementing and Changing the Serial Number</A
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User></DT
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User><DT
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User>8.3. <A
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox UserHREF="Bv9ARM.ch08.html#AEN4743"
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User>Where Can I Get Help?</A
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User></DT
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User></DL
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User></DIV
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User><DIV
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox UserCLASS="sect1"
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User><H1
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox UserCLASS="sect1"
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User><A
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox UserNAME="AEN4733"
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User>8.1. Common Problems</A
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User></H1
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User><DIV
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox UserCLASS="sect2"
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User><H2
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox UserCLASS="sect2"
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User><A
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox UserNAME="AEN4735"
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User>8.1.1. It's not working; how can I figure out what's wrong?</A
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User></H2
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User><P
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User>The best solution to solving installation and
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User configuration issues is to take preventative measures by setting
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User up logging files beforehand. The log files provide a
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User source of hints and information that can be used to figure out
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User what went wrong and how to fix the problem.</P
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User></DIV
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User></DIV
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User><DIV
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox UserCLASS="sect1"
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User><H1
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox UserCLASS="sect1"
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User><A
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox UserNAME="AEN4738"
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User>8.2. Incrementing and Changing the Serial Number</A
7e71f05d8643aca84914437c900cb716444507e4Tinderbox User></H1
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User><P
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User>Zone serial numbers are just numbers-they aren't date
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User related. A lot of people set them to a number that represents a
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User date, usually of the form YYYYMMDDRR. A number of people have been
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User testing these numbers for Y2K compliance and have set the number
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User to the year 2000 to see if it will work. They then try to restore
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User the old serial number. This will cause problems because serial
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User numbers are used to indicate that a zone has been updated. If the
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User serial number on the slave server is lower than the serial number
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User on the master, the slave server will attempt to update its copy of
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User the zone.</P
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User><P
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User>Setting the serial number to a lower number on the master
7911e6f9de303bca5a3d8b34f4330c8f7cecffaeTinderbox User server than the slave server means that the slave will not perform
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User updates to its copy of the zone.</P
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User><P
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User>The solution to this is to add 2147483647 (2^31-1) to the
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User number, reload the zone and make sure all slaves have updated to
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User the new zone serial number, then reset the number to what you want
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User it to be, and reload the zone again.</P
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User></DIV
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User><DIV
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox UserCLASS="sect1"
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User><H1
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox UserCLASS="sect1"
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User><A
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox UserNAME="AEN4743"
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User>8.3. Where Can I Get Help?</A
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User></H1
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User><P
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User>The Internet Software Consortium (<SPAN
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox UserCLASS="acronym"
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User>ISC</SPAN
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User>) offers a wide range
c313914d0e66b20969215e519bbf2ab4ecf39512Tinderbox User of support and service agreements for <SPAN
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox UserCLASS="acronym"
1e9517ea2156b990be21f44676d3370318eacf17Tinderbox User>BIND</SPAN
> and <SPAN
CLASS="acronym"
>DHCP</SPAN
> servers. Four
levels of premium support are available and each level includes
support for all <SPAN
CLASS="acronym"
>ISC</SPAN
> programs, significant discounts on products
and training, and a recognized priority on bug fixes and
non-funded feature requests. In addition, <SPAN
CLASS="acronym"
>ISC</SPAN
> offers a standard
support agreement package which includes services ranging from bug
fix announcements to remote support. It also includes training in
<SPAN
CLASS="acronym"
>BIND</SPAN
> and <SPAN
CLASS="acronym"
>DHCP</SPAN
>.</P
><P
>To discuss arrangements for support, contact
<A
HREF="mailto:info@isc.org"
TARGET="_top"
>info@isc.org</A
> or visit the
<SPAN
CLASS="acronym"
>ISC</SPAN
> web page at <A
HREF="http://www.isc.org/services/support/"
TARGET="_top"
>http://www.isc.org/services/support/</A
>
to read more.</P
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