diff --git a/Lib/plat-irix5/IN.py b/Lib/plat-irix5/IN.py
index 2d67892..8f58176 100755
--- a/Lib/plat-irix5/IN.py
+++ b/Lib/plat-irix5/IN.py
@@ -1,4 +1,7 @@
 # Generated by h2py from /usr/include/netinet/in.h
+from warnings import warnpy3k
+warnpy3k("the IN module has been removed in Python 3.0", stacklevel=2)
+del warnpy3k
 
 # Included from sys/endian.h
 LITTLE_ENDIAN = 1234
diff --git a/Lib/plat-irix6/IN.py b/Lib/plat-irix6/IN.py
index 9385bb0..8d140a7 100644
--- a/Lib/plat-irix6/IN.py
+++ b/Lib/plat-irix6/IN.py
@@ -1,4 +1,7 @@
 # Generated by h2py from /usr/include/netinet/in.h
+from warnings import warnpy3k
+warnpy3k("the IN module has been removed in Python 3.0", stacklevel=2)
+del warnpy3k
 
 # Included from standards.h
 
diff --git a/Lib/test/test_py3kwarn.py b/Lib/test/test_py3kwarn.py
index 1d0c37f..9964ad5 100644
--- a/Lib/test/test_py3kwarn.py
+++ b/Lib/test/test_py3kwarn.py
@@ -134,7 +134,7 @@
     inclusive_platforms = {'irix' : ('pure', 'AL', 'al', 'CD', 'cd', 'cddb',
                                      'cdplayer', 'CL', 'cl', 'DEVICE', 'GL',
                                      'gl', 'ERRNO', 'FILE', 'FL', 'flp', 'fl',
-                                     'fm', 'GET', 'GLWS', 'imgfile'),
+                                     'fm', 'GET', 'GLWS', 'imgfile', 'IN'),
                           'darwin' : ('autoGIL', 'Carbon', 'OSATerminology',
                                       'icglue', 'Nav', 'MacOS', 'aepack',
                                       'aetools', 'aetypes', 'applesingle',