TNS-12505: host_addr changed in log.xml

After successfully installing Oracle 11g with Enterprise Manager on a Windows XP VMWare guest (don't ask), I copied the whole VMWare-Machine and started it on another Host-Machine as well.
However the listener on the second machine does not know about my instance-SID anymore. Investigating the logs, the only difference I could find (and think of) is this:
Messages before were from host_addr='127.0.0.1' while after copying/running the VM they originated from host_addr='192.168.0.170'.
Right now I'm not in the position to investigate the problem hands-on, so I just wanted to ask if this could indeed cause the instance to fail registering with the listener (and thus throw the TNS-12505 when someone wanted to connect to it).
Thanks in advance for this great forum,
Jojo

After successfully installing Oracle 11g with Enterprise Manager EM breaks when system IP number changes

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Copyright (c) 1982, 2007, Oracle. All rights reserved.
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