Operation not supported error on startup

[Jamie L. Penman-Smithson]

I'm attempting to run bind 9.3.2 on FreeBSD 6 in a jail and chrooted.
Upon starting up, it logs the following messages:

Mar 31 01:07:30 defiant named[83561]: starting BIND 9.3.2 -c /etc/ 
named.conf -d 4 -t /var/named -u 53
Mar 31 01:07:30 defiant named[83561]: command channel listening on  
65.23.155.72#953
Mar 31 01:07:30 defiant named[83561]: errno2result.c:109: unexpected  
error:
Mar 31 01:07:30 defiant named[83561]: unable to convert errno to  
isc_result: 45: Operation not supported

After this is continues to load zones and appears to carry on  
normally - I'd still like to know why this is happening.

Googling for the above didn't turn up anything immediately useful. I  
tried running it in debug mode but the messages don't point to  
anything either:

now using logging configuration from config file
load_configuration: success
zone 0.in-addr.arpa/IN: starting load
zone 0.in-addr.arpa/IN: number of nodes in database: 1
zone 0.in-addr.arpa/IN: loaded
no journal file, but that's OK
zone 0.in-addr.arpa/IN: journal rollforward completed successfully:  
no journal
zone 0.in-addr.arpa/IN: loaded serial 1
zone 0.0.127.in-addr.arpa/IN: starting load
zone 0.0.127.in-addr.arpa/IN: number of nodes in database: 3
zone 0.0.127.in-addr.arpa/IN: loaded
no journal file, but that's OK
zone 0.0.127.in-addr.arpa/IN: journal rollforward completed  
successfully: no journal
zone 0.0.127.in-addr.arpa/IN: loaded serial 1
zone 255.in-addr.arpa/IN: starting load
zone 255.in-addr.arpa/IN: number of nodes in database: 1
zone 255.in-addr.arpa/IN: loaded
no journal file, but that's OK
zone 255.in-addr.arpa/IN: journal rollforward completed successfully:  
no journal
zone 255.in-addr.arpa/IN: loaded serial 1

Any ideas?

Thanks in advance,

-j