diff -Naur sudo-1.7.2p7.orig/debian/sudoers sudo-1.7.2p7/debian/sudoers
--- sudo-1.7.2p7.orig/debian/sudoers	2010-07-06 13:44:18.000000000 -0400
+++ sudo-1.7.2p7/debian/sudoers	2011-02-10 17:48:40.494324970 -0500
@@ -9,6 +9,13 @@
 
 Defaults	env_reset
 
+# Allow proxy environment variables to pass through
+Defaults env_keep="no_proxy NO_PROXY"
+Defaults env_keep+="all_proxy ALL_PROXY"
+Defaults env_keep+="http_proxy HTTP_PROXY"
+Defaults env_keep+="https_proxy HTTPS_PROXY"
+Defaults env_keep+="ftp_proxy FTP_PROXY"
+
 # root can use sudo to do anything
 root	ALL=(ALL) ALL