When scanning interfaces with WMI, include networks without a domain. (#999)

* When scanning interfaces with WMI, include networks without a domain.

* Ignore networks found via wmi that have no nameservers

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Co-authored-by: Me <me@shiranpuri.com>

diff --git a/dns/win32util.py b/dns/win32util.py
index b2ca61dae9a0a48bdf7ae73720b4154891cd46b2..3e67c6bb20378ddb9c4b6c6d283ec131e1e5c202 100644 (file)
--- a/dns/win32util.py
+++ b/dns/win32util.py
@@ -51,9 +51,10 @@ if sys.platform == "win32":
                 try:
                     system = wmi.WMI()
                     for interface in system.Win32_NetworkAdapterConfiguration():
-                        if interface.IPEnabled and interface.DNSDomain:
-                            self.info.domain = _config_domain(interface.DNSDomain)
+                        if interface.IPEnabled and interface.DNSServerSearchOrder:
                             self.info.nameservers = list(interface.DNSServerSearchOrder)
+                            if interface.DNSDomain:
+                                self.info.domain = _config_domain(interface.DNSDomain)
                             if interface.DNSDomainSuffixSearchOrder:
                                 self.info.search = [
                                     _config_domain(x)