diff --git a/Lib/uuid.py b/Lib/uuid.py
index 9cb73e8..6638321 100644
--- a/Lib/uuid.py
+++ b/Lib/uuid.py
@@ -488,7 +488,7 @@
         with proc:
             for line in proc.stdout:
                 value = line.split(':')[-1].strip().lower()
-                if re.match('([0-9a-f][0-9a-f]-){5}[0-9a-f][0-9a-f]', value):
+                if re.fullmatch('(?:[0-9a-f][0-9a-f]-){5}[0-9a-f][0-9a-f]', value):
                     mac = int(value.replace('-', ''), 16)
                     if _is_universal(mac):
                         return mac
diff --git a/Misc/ACKS b/Misc/ACKS
index ffc932b..31ad80f 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -426,6 +426,7 @@
 David Edelsohn
 John Edmonds
 Grant Edwards
+Zvi Effron
 John Ehresman
 Tal Einat
 Eric Eisner
diff --git a/Misc/NEWS.d/next/Library/2018-05-16-09-30-27.bpo-33542.idNAcs.rst b/Misc/NEWS.d/next/Library/2018-05-16-09-30-27.bpo-33542.idNAcs.rst
new file mode 100644
index 0000000..16ba799
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2018-05-16-09-30-27.bpo-33542.idNAcs.rst
@@ -0,0 +1,2 @@
+Prevent ``uuid.get_node`` from using a DUID instead of a MAC on Windows.
+Patch by Zvi Effron