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I am connecting to home network with dummy DHCP server which is providing only IPv4 address, subnet mask and gateway, but when I run ipconfig /all I see, that there is set connection-specific DNS suffix of some network I connected in past. This is weird, because on the basis of DNS suffix is set firewall profile.

Some hints:

  • Network whose DNS suffix persist in settings of my wireless connection was IPv6 only
  • When I disable IPv6, DNS suffix disappears
  • I am connected to home network by Wi-Fi and by ethernet (same DHCP server), but DNS suffix is present only on Wi-Fi
  • When I restart computer, DNS suffix is gone and good firewall profile is selected, but when I disable adapter and enable again, suffix is back (same when going to sleep)
  • Same suffix is present on isatap adapter

Thank you in advance

share|improve this question
    
which part of this is an actual question? –  AdamV Nov 5 '12 at 12:26
    
Question is why is connection-specifix DNS suffix set though DHCP server did not providing it. –  Martin Stastny Nov 5 '12 at 12:29
    
You should be able to explicitly configure the DNS suffix via the Advanced TCP/IP properties for the adapter. –  Harry Johnston Nov 6 '12 at 21:21

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