On Jun 9, 2009, at 5:21 PM, Mark Andrews wrote:
In message
<20090609113700.ga6...@evileye.atkac.englab.brq.redhat.com>, Adam Tk
ac writes:
On Tue, Jun 09, 2009 at 11:22:12AM +1000, Mark Andrews wrote:
In message
<99e6a67a9da87041a8020fbc11f480b3031cc...@exvs01.dsw.net>, "Jeff
Lig
htner" writes:
BIND versions on RHEL (e.g. 9.3.4-6.0.3.P1.el5_2) have backported
patches from later BIND versions so it isn't exactly the same
animal as
the EOL 9.3 which is why it isn't listed simply as 9.3
I've yet to see a vendor back port every bug fix and that is what
would be required to really support a product in a OS which is at
EOL by the producer.
Mark
This is neverending discord between you (upstream) and vendors.
You are right the ideal approach is to backport all fixes but it
simply consumes much manpower. Update to newer version is not
possible
because there are configuration incompatibilities.
Optimal software from economic perspective is usually different from
optimal software from programming perspective. If you combine both
perspectives you probably get answer why vendors backport patches
only
for issues which are reported by their customers.
Regards, Adam
There are very few backwards compatiblilty issues with BIND
in terms of configuration files. If you ignore the logging
stanza you should be able take most BIND 8.1 configuration
files and have BIND 9.6.1 use it. There are even tools in
the distribution to take a BIND 4 configuration file and
convert it to BIND 8/9 format and use it.
The master files go back to the earliest version of BIND 4.
New version are just less tolerent of errors in the master
files. Correct master files from 2 decades ago just work.
Almost all the changes in major revisions is new functionality.
The change to the default value of allow-recursion is still tripping
up our customers. Otherwise, I agree.
On the other hand, the builds from the Linux vendors have been less
than perfectly stable at moderately high levels of traffic. Rebuilding
from stock source code has always fixed this problem. We've seen this
problem with both the Red Hat build and the Debian build.
Chris Buxton
Professional Services
Men & Mice
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