diff --git a/configure.in b/configure.in
index 429b22f8..309cb836 100644
--- a/configure.in
+++ b/configure.in
@@ -125,6 +125,10 @@ else
 				;;
 		ipv4:freebsd*)	sysdesc=bsd
 				;;
+		ipv6:kfreebsd*) sysdesc=bsd-v6
+				;;
+		ipv4:kfreebsd*) sysdesc=bsd
+				;;
 		ipv6:openbsd*)	sysdesc=bsd-v6
 				;;
 		ipv4:openbsd*)	sysdesc=bsd