Address of nonexistent hosts...?

[Carlo Tambuatco]

Just installed a port and got this message: 

Warning: Your DNS servers incorrectly claim to know the address of nonexistent hosts. This may cause checksum mismatches for some ports. See this page for more information: <https://trac.macports.org/wiki/MisbehavingServers>

So I visited the site but it doesn’t look like any of the cases apply to me, and I haven’t contacted my ISP since so far no checksum mismatches have been found, so not sure if anything needs to be done on my part…