`named' uses 32-bit capabilities

[bsfinkel at anl.gov]

In production I am running BIND 9.6.1-P3 on Solaris 9,
sun4u sparc SUNW,Sun-Fire-V240.  When I start BIND I get this message:

Jan 25 11:03:17 dns1 named[9673]: [ID 873579 daemon.notice]
  built with '--prefix=/export/home/named/bind'
             '--with-openssl=/krb5'
             '--sysconfdir=/export/home/named'
             '--enable-threads'
             '--localstatedir=/var'

I am testing the same version of BIND on an Ubuntu Karmic system,
x86_64 GNU/Linux.  Both are built from the ISC source.
When I start BIND I get these messages:

Feb 19 10:08:01 karmic kernel: [146949.294524] warning:
  `named' uses 32-bit capabilities (legacy support in use)
Feb 19 10:08:01 karmic named[22678]:
  starting BIND 9.6.1-P3 -c /etc/iscbind/named.conf
Feb 19 10:08:01 karmic named[22678]:
  built with '--prefix=/etc/iscbind/bind/'
             '--sysconfdir=/etc/iscbind'
             '--mandir=/usr/share/man'
             '--infodir=/usr/share/info'
             '--with-gssapi=/usr'

What is causing the

     `named' uses 32-bit capabilities (legacy support in use)

message on this Ubuntu karmic build?  What do I need to specify
to avoid the 32-bit code?  Thanks.
----------------------------------------------------------------------
Barry S. Finkel
Computing and Information Systems Division
Argonne National Laboratory          Phone:    +1 (630) 252-7277
9700 South Cass Avenue               Facsimile:+1 (630) 252-4601
Building 240, Room 5.B.8             Internet: BSFinkel at anl.gov
Argonne, IL   60439-4828             IBMMAIL:  I1004994