Using getnameinfo() I got First-chance exception - kernel32.dll

I just did a small tool that uses getnameinfo() function in order to get computers names using an IPs range.
Everything it's fine but I don't like that I got an exception in my output window:

Code:

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First-chance exception at 0x77d67ded (kernel32.dll) in scanComputersName.exe: 0x000006BA: The RPC server is unavailable.

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This exception appears for each range's IP that it's not assigned to a real station.

My first point of view it's that this isn’t a big issue.
http://support.microsoft.com/kb/884564
http://support.microsoft.com/kb/257187

But I don't like exceptions. :) That's why I'm looking for experienced opinions in this topic.

First-chance exception messages can be ignored. Especially in your case, when you know their reason. Some internal getnameinfo implementation uses SEH to catch invalid address.
The only case when we need to worry about first-chance exception messages, is if we don't expect them - everything should be 100% correct, but they appear.

Alex, thanks for your reply. I'm using VC++ 2005 (VS Team Suite). Maybe, the implementation of this function includes SEH. All the best!