update so late!!

[mstk_a at livedoor.com]

Hi, all.

I have a problem with dynamic updating.
I use "dhcpd3.0b2 pl 11" and "bind8.2.2 pl 5".
This is a log of when dhcpd(volvo) leases an IP for dhcp client
(yongala),

>Dec 16 22:52:16 volvo dhcpd: delete IN A yongala.knet: succeeded.
>Dec 16 22:52:16 volvo dhcpd: delete IN PTR 145.1.168.192.in-addr.arpa: 
succeeded
>Dec 16 22:52:16 volvo dhcpd: if IN A yongala.knet doesn't exist add 
1800 IN A yongala.knet 192.168.1.145: succeeded.
>Dec 16 22:52:16 volvo dhcpd: delete IN PTR 145.1.168.192.in-addr.arpa 
add 1800 IN PTR 145.1.168.192.in-addr.arpa yongala.knet: succeeded.
>Dec 16 22:52:16 volvo dhcpd: DHCPREQUEST for 192.168.1.145 from 
00:a0:24:c9:c3:fa (yongala) via eth0
>Dec 16 22:52:16 volvo dhcpd: DHCPACK on 192.168.1.145 to 
00:a0:24:c9:c3:fa (yongala) via eth0 

And then, dhcpd send update messages for named (kabu2000).
Named creates knet.db.ixfr, knet.db.log, 192.168.1.db, and 
192.168.1.db.log.

----knet.db.ixfr
>;BIND LOG V8
>[DYNAMIC_UPDATE] id 5074 from [192.168.1.20].1026 at 976975453 (named 
pid 5877):
>zone:   origin knet class IN serial 2000121601
>update: {add} yongala.knet. 1800 IN A 192.168.1.145
>update: {delete} knet. 86400 IN SOA kabu2000.knet. root.kabu2000.knet. 
( 2000121601 1800 900 604800 86400 )
>update: {add} knet. 86400 IN SOA kabu2000.knet. root.kabu2000.knet. ( 
2000121602 1800 900 604800 86400 )          
>[END DELTA]

----knet.db.log
>;BIND LOG V8
>[DYNAMIC_UPDATE] id 5074 from [192.168.1.20].1026 at 976975453 (named 
pid 5877):
>zone:   origin knet class IN serial 2000121601
>prereq: {nxrrset} yongala.knet. IN A
>update: {add} yongala.knet. 1800 IN A 192.168.1.145
>[INCR_SERIAL] from 2000121601 to 2000121602 Sat Dec 16 23:09:13 2000 

These logs'last comment([END DELTA]and[INCR_SERIAL]) appear a few 
minutes later. I think these comment show the end of updaing, but db 
files(knet.db and 192.168.1.db) are updated actually half an hour later.
I can't undestand why .

Any help will please . If you need more imfomation, I'll send. 
 
Thanks,

                                 Masataka

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