NetBSD-6 RC2 (and -current) named looping

[Sverre Froyen <sverre%viewmark.com@localhost>]

Hi,

After upgrading a NetBSD-5 system to 6 RC2, I find that named is using 100% 
CPU. The symptoms look identical to this report:

http://mail-index.netbsd.org/current-users/2012/06/17/msg020440.html

My ktrace shows a continuous stream of:

 11333      6 named    CALL  __gettimeofday50(0xbabff87c,0)
 11333      6 named    RET   __gettimeofday50 0
 11333      6 named    CALL  ___lwp_park50(0xbabff87c,0,0xbb51b020,0xbb51b020)
 11333      4 named    CALL  __gettimeofday50(0xbafffa1c,0)
 11333      4 named    RET   __gettimeofday50 0
 11333      4 named    CALL  __gettimeofday50(0xbafff91c,0)
 11333      4 named    RET   __gettimeofday50 0
 11333      4 named    CALL  _lwp_unpark(6,0xbb51b020)
 11333      4 named    RET   _lwp_unpark 0
 11333      6 named    RET   ___lwp_park50 0

I do not see any resolution to the problem in the archives but I find that 
commenting out the

        dnssec-lookaside auto;

option in the named.conf stops the high CPU usage. Is this a reasonable 
workaround? Is there a better way to resolve this?

Regards,
Sverre

PS I see the same behavior with NetBSD-current (from late August).