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Date:      Wed, 08 Aug 2001 08:53:16 -0400
From:      Michael Sinz <msinz@wgate.com>
To:        freebsd-bugs@FreeBSD.ORG
Cc:        dillon@backplane.com
Subject:   FreeBSD 4.4 prerelease broke bind
Message-ID:  <3B71363C.EB14B13C@wgate.com>

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The current build of FreeBSD 4.4 (prerelease) majorly broke us here.

The DNS server cores whenever DHCPD does an update packet (sending
a name for a newly conencted or updated IP address)

In FreeBSD 4.3 (latest before the bind 8.2.4 MFC) things worked great.
In the current 4.4, bind 8.2.4 replaced 8.2.3 and all hell breaks loose.

named starts up (only after we remove all of the .log files in its
database directory) and then starts to run.  We 

Aug  7 17:34:01 Server-0-2 named[2298]: starting (/etc/namedb/named.conf).  named 8.2.4-REL Mon Aug  6 09:53:51 EDT 2001        root@tics36.eng.tvol.net:/usr/obj/usr/src/usr.sbin/named
Aug  7 17:34:01 Server-0-2 named[2298]: limit files set to fdlimit (1024)
Aug  7 17:34:02 Server-0-2 named[2299]: Ready to answer queries.

Aug  7 17:34:43 Server-0-2 dhcpd: No hostname for 172.31.191.251
Aug  7 17:34:47 Server-0-2 dhcpd: if IN A tics-191-251.tics35.eng.tvol.net domain doesn't exist add 150 IN A tics-191-251.tics35.eng.tvol.net 172.31.191.251 add 150 IN TXT tics-191-251.tics35.eng.tvol.net "00b8084f86117dc0d53be0931cfae03a4e": success.
Aug  7 17:34:47 Server-0-2 dhcpd: delete IN PTR 251.191.31.172.in-addr.arpa. add 150 IN PTR 251.191.31.172.in-addr.arpa. tics-191-251.tics35.eng.tvol.net: success.
Aug  7 17:37:11 Server-0-2 dhcpd: if IN A tics-191-253.tics35.eng.tvol.net domain doesn't exist add 575131708 IN A tics-191-253.tics35.eng.tvol.net 172.31.191.253 add 575131708 IN TXT tics-191-253.tics35.eng.tvol.net "0011ba341b1cbfc959be170e3195560019": success.
Aug  7 17:37:11 Server-0-2 dhcpd: delete IN PTR 253.191.31.172.in-addr.arpa. add 575131708 IN PTR 253.191.31.172.in-addr.arpa. tics-191-253.tics35.eng.tvol.net: success.

Aug  7 17:37:11 Server-0-2 named[2299]: d_rcnt-- == 0
Aug  7 17:37:11 Server-0-2 named[2299]: d_rcnt-- == 0
Aug  7 17:37:11 Server-0-2 /kernel: pid 2299 (named), uid 0: exited on signal 6 (core dumped)

(there are other, unreleated items in syslog - these are those that matter
the others are just from other machines being active at the time...)

Anyway, as you can see, a simple dynamic update blows DNS right out of
the water.  No more name server (at which point all sorts of things fail
as we get no more lookups of other items, such as the nfs server or the
web server or...)

Anyway, this is a heads up that 4.4 prerelease is, for our use atleast, DOA.

(I have not yet had time to try to track this down - there are some major
differences between bind 8.2.3 and 8.2.4 so it was non-obvious at first
glance - having had just a few minutes to look into it)

-- 
Michael Sinz ---- Worldgate Communications ---- msinz@wgate.com
A master's secrets are only as good as
	the master's ability to explain them to others.

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