How To Patch / Upgrade BIND 9.x Under FreeBSD Operating System

Q. BIND 9 is part of core FreeBSD 7.x. How do I apply BIND 9 security patch under FreeBSD 7.x? Do I need to fetch entire source (buildworld) to patch BIND 9? How do I patch up recent BIND 9 DNS cache poisoning bug?

A. No, you don’t have to fetch entire source to patch up BIND 9 if you are running latest stable (6-STABLE or 7-STABLE). The BIND DNS implementation does not randomize the UDP source port when doing remote queries, and the query id alone does not provide adequate randomization.


To fix this issue under FreeBSD 6.3, download patch:
# cd /tmp
# fetch -o bind.patch

If you are using FreeBSD 7.0, enter:
# cd /tmp
# fetch -o bind.patch

Type the following commands to compile and install bind 9 patch:
# cd /usr/src
# patch < /tmp/bind.patch # cd /usr/src/lib/bind # make obj && make depend && make && make install # cd /usr/src/usr.sbin/named # make obj && make depend && make && make install

Restart bind 9:
# /etc/rc.d/named restart
# tail -f /var/log/messages

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7 comments… add one
  • O'Shaughnessy Evans Jul 25, 2008 @ 7:55

    Since you’re upgrading BIND, you might as well upgrade rndc, too. How about adding this to your “make” section?

    # cd /usr/src/usr.sbin/rndc
    # make obj && make depend && make && make install

  • RyAn Jul 28, 2008 @ 2:56

    I have this error while patching my DNS on freeBSD.

    neon# patch < /root/bind63.patch 
    Hmm...  Looks like a unified diff to me...
    The text leading up to this was:
    |Index: contrib/bind9/bin/named/client.c
    |RCS file: /usr/ncvs/src/contrib/bind9/bin/named/client.c,v
    |retrieving revision
    |diff -u -r1. client.c
    |--- contrib/bind9/bin/named/client.c	25 Jul 2007 08:23:07 -0000
    |+++ contrib/bind9/bin/named/client.c	10 Jul 2008 16:07:20 -0000
    File to patch: 
    No file found--skip this patch? [n] 
    File to patch: ^[[A^[[A
    No file found--skip this patch? [n]
  • 🛡️ Vivek Gite (Author and Admin) nixCraft Jul 28, 2008 @ 8:13


    Do you have up to date FreeBSD source tree?

  • jimbo Aug 1, 2008 @ 16:56

    i’m also getting the same error as RyAn. new install of fbsd 7, minimal. how do i run the patch without having to to a cvsup and blowing the whole point of having a minimal install?

  • 🛡️ Vivek Gite (Author and Admin) nixCraft Aug 1, 2008 @ 18:13


    There is binary update method, it will only work if you are not using custom kernel.

  • jimbo Aug 1, 2008 @ 18:23

    how do i do the binary update?

  • 🛡️ Vivek Gite (Author and Admin) nixCraft Aug 1, 2008 @ 18:41

    Use freebsd-update command which is used to fetch, install, and rollback binary updates to the FreeBSD base system. You can also use sysinstall to update system. Read man pages for further information.

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