Samba4wins problem with clients changing IP addresses
William Marshall
bmarsh at us.ibm.com
Tue Jun 27 21:53:54 GMT 2006
Last weekend we moved to Samba4wins to replace our Shadow IPServers
(http://www.shadowsupport.com/) which we have been running for a long
time.
We have seen problems where users will get the pop-up "duplicate name on
network" and in some cases this seems to really confuse the workstation or
redirector code so that it will not allow them to map drives any more.
We think the scenario is something like:
1. ComputerA with IP1 on shuts down or suspends for awhile. Generally we
saw this on thinkpads that were mobile between subnets.
2. ComputerB comes online and since the DHCP pool is small, takes IP1
3. ComputerA comes back online - maybe from home, maybe on wireless, maybe
on the same network - but gets IP2
4. ComputerA asks the WINS server for the name ComputerA
5. The WINS server (in wins_challenge_recv in nbt_server/wins/winswack.c )
asks IP1 if the name ComputerA is still in use
6. We don't totally understand wins_challenge_recv, but it appears if ANY
windows client responds at all (like ComputerB) the current mapping is
kept
7. ComputerA is denied its name and a duplicate name on network error is
shown
Bill Marshall
Integrated Technology Delivery, Server Operations
Rochester PC Server Team
More information about the samba-technical
mailing list