Index: libiptc/libip4tc.c
===================================================================
--- libiptc/libip4tc.c	(revision 3742)
+++ libiptc/libip4tc.c	(working copy)
@@ -210,6 +210,7 @@
 	mptr = matchmask + sizeof(STRUCT_ENTRY);
 	if (IPT_MATCH_ITERATE(a, match_different, a->elems, b->elems, &mptr))
 		return NULL;
+	mptr += IPT_ALIGN(sizeof(struct ipt_entry_target));
 
 	return mptr;
 }
Index: libiptc/libip6tc.c
===================================================================
--- libiptc/libip6tc.c	(revision 3742)
+++ libiptc/libip6tc.c	(working copy)
@@ -242,6 +242,7 @@
 	mptr = matchmask + sizeof(STRUCT_ENTRY);
 	if (IP6T_MATCH_ITERATE(a, match_different, a->elems, b->elems, &mptr))
 		return NULL;
+	mptr += IP6T_ALIGN(sizeof(struct ip6t_entry_target));
 
 	return mptr;
 }