--- Configure.orig	2011-01-19 01:47:42.000000000 +0800
+++ Configure	2011-01-23 04:40:04.000000000 +0800
@@ -1576,6 +1576,10 @@
 	LSOF_TSTBIGF=" "
 	LSOF_VERS=8000
 	;;
+      8.1*)
+	LSOF_TSTBIGF=" "
+	LSOF_VERS=8010
+	;;
       8.2*)
 	LSOF_TSTBIGF=" "
 	LSOF_VERS=8020
@@ -1601,7 +1605,7 @@
     # Clear LSOF_UNSUP message for supported versions of FreeBSD.
     
     case $LSOF_VERS in  # {
-    4090|7000|7010|7020|7030|7040|8000|8020|9000)
+    4090|7000|7010|7020|7030|7040|8000|8010|8020|9000)
       LSOF_UNSUP=""
       ;;
     esac	# }
@@ -1687,7 +1691,7 @@
 	LSOF_CFGF="$LSOF_CFGF -DHASVMLOCKH"
       fi	# }
       ;;
-    4000|4010|4020|4030|4040|4050|4060|4070|4080|4090|4100|4110|5000|5010|5020|5030|5040|5050|6000|6010|6020|6030|6040|7000|7010|7020|7030|7040|8000|8020|9000)
+    4000|4010|4020|4030|4040|4050|4060|4070|4080|4090|4100|4110|5000|5010|5020|5030|5040|5050|6000|6010|6020|6030|6040|7000|7010|7020|7030|7040|8000|8010|8020|9000)
       if test -r ${LSOF_INCLUDE}/nfs/rpcv2.h	# {
       then
 	LSOF_CFGF="$LSOF_CFGF -DHASRPCV2H"