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-rw-r--r--trunk/ipaddr.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/trunk/ipaddr.py b/trunk/ipaddr.py
index 45b98ae..62d49f7 100644
--- a/trunk/ipaddr.py
+++ b/trunk/ipaddr.py
@@ -231,7 +231,7 @@ def summarize_address_range(first, last):
raise TypeError('first and last must be IP addresses, not networks')
if first.version != last.version:
raise TypeError("%s and %s are not of the same version" % (
- str(self), str(other)))
+ str(first), str(last)))
if first > last:
raise ValueError('last IP address must be greater than first')