[KLUG Members] WINS using old IP address question

[bill]

On Wed, 2005-07-13 at 22:50, Adam Tauno Williams wrote:
> > >Sometimes when I log in to a network with a computer I get a different
> > >IP address than I did logging in last time with the same computer.  This
> > >might happen by logging in wirelessly or logging in remotely with
> > >OpenVPN.
> > >For example: 
> > >First time:  192.168.0.100
> > >Second time: 192.168.0.200
> > >The network has a SMB server and a WINS server.
> > OK, but not relevant to IP addresses.  Those are handed out by a dhcp 
> > server.
> 
> Do we know that this addresses is dolled out by a DHCP server?  Or
> simply handed out from a pool on the VPN server (I don't recall how
> OpenVPN does this)?

In the case I'm looking at, it was doled out from a VPN server.

> What does "host mycomputer" say?  In the Samba configs what is the name
> resolution order?

wins lmhosts hosts bcast

> > >When I do 
> > >smbclient -L mycomputer
> > >it tries to connect to the old IP address, even when the box is on the
> > >network with a new IP address.
> > The dhcp and DNS server are supposed to be able to talk to each other, 
> > and the dhcp server will update dynamic DNS records on the DNS server so 
> 
> True. (1) Is this lookup occuring via WINS or DNS?  If it is WINS then
> updating the DNS doesn't get you anything. (2) Registering a name to a
> new addresses doesn't necessarily deregister that name for the other
> address.

I think the lookup is occuring via WINS


> You need to generate a deregistration event when the client goes away.

How is this done?

> > >Is there a way to announce when logging in, "Hey, I'm over here now!"  ?
> 
> This is the purpose of WINS.

That was my understanding...  which is why I'm surprised it isn't
working.


> Is the problem that the client IP address changes or the server?

client ip
> 
> ______________________________________________________________________