diff --git a/src/proto_tcp.c b/src/proto_tcp.c
index 11f6331..2b12ef8 100644
--- a/src/proto_tcp.c
+++ b/src/proto_tcp.c
@@ -160,6 +160,9 @@
 #if defined(IPV6_TRANSPARENT)
 			    || (setsockopt(fd, SOL_IPV6, IPV6_TRANSPARENT, &one, sizeof(one)) == 0)
 #endif
+#if defined(IP_FREEBIND)
+			    || (setsockopt(fd, SOL_IP, IP_FREEBIND, &one, sizeof(one)) == 0)
+#endif
 #if defined(IPV6_BINDANY)
 			    || (setsockopt(fd, IPPROTO_IPV6, IPV6_BINDANY, &one, sizeof(one)) == 0)
 #endif
@@ -787,6 +790,9 @@
 #if defined(IPV6_TRANSPARENT)
 			    && (setsockopt(fd, SOL_IPV6, IPV6_TRANSPARENT, &one, sizeof(one)) == -1)
 #endif
+#if defined(IP_FREEBIND)
+			    && (setsockopt(fd, SOL_IP, IP_FREEBIND, &one, sizeof(one)) == -1)
+#endif
 #if defined(IPV6_BINDANY)
 			    && (setsockopt(fd, IPPROTO_IPV6, IPV6_BINDANY, &one, sizeof(one)) == -1)
 #endif