diff -ru a/tcpreplay-3.4.4.ebuild b/tcpreplay-3.4.4.ebuild
--- a/tcpreplay-3.4.4.ebuild	2010-04-21 19:24:09.000000000 +0000
+++ b/tcpreplay-3.4.4.ebuild	2010-09-11 05:41:27.009876579 +0000
@@ -24,6 +24,9 @@
 
 src_prepare() {
 	echo "We don't use bundled libopts" > libopts/options.h
+	sed -i \
+		-e '/char ipaddr/s/16/20/' \
+		src/common/cidr.c || die
 }
 
 src_configure() {