diff -Nrux .svn -x work /usr/ports/net/p5-Net-Ping-External/Makefile p5-Net-Ping-External/Makefile
--- /usr/ports/net/p5-Net-Ping-External/Makefile	2009-08-17 12:26:09.000000000 -0700
+++ p5-Net-Ping-External/Makefile	2011-01-14 18:48:17.000000000 -0800
@@ -14,6 +14,9 @@
 MAINTAINER=	douglas@douglasthrift.net
 COMMENT=	Perl cross-platform interface to ICMP "ping" utilities
 
+LICENSE=	ART10 GPLv1
+LICENSE_COMB=	dual
+
 USE_ZIP=	yes
 PERL_CONFIGURE=	yes