ddns update probs

[Simon Hobson]

saravanan ganapathy wrote:

>I am using dhcp & dyn.dns(bind) in my network and
>everything works fine, except the following issue.
>
>some of my mobile systems roaming around the networks
>and due to some reasons,those are not properly send
>the release request when changing the network. Ex. a
>notebook has ip address of 192.168.110.100 and changed
>to 192.168.112.133. But my dns still shows
>192.168.10.100 only. my dhcp log shows as follows
>
>
>Jan  7 09:52:21 dhcp dhcpd: if IN A note1.abc.com
>domain doesn't exist add 302400 IN A note1.abc.com
>192.168.112.133 add 302400 IN TXT note1.abc.com
>"31f0ea946091a19ad6167e1fb29ca6272d": domain already
>exists.
>Jan  7 09:52:21 dhcp dhcpd: if IN TXT note1.abc.com
>"31f0ea946091a19ad6167e1fb29ca6272d" rrset exists
>delete IN A note1.abc.com add 302400 IN A
>note1.abc.com 192.168.112.133: no such RRset.
>
>I know that this is due to the existence of rr sets of
>note1.abc.com as 192.168.110.100.
>
>Is there any possibility to overwrite the existing
>rrsets? or any other solution for this?

This very problem has just been discussed (in the last week) over on 
the ISC DHCP server list - I suggest you check the archives at 
http://www.isc.org/ops/lists/.

Simon

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Simon Hobson MA MIEE, Technology Specialist
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