Index: uspace/lib/net/include/net_checksum.h
===================================================================
--- uspace/lib/net/include/net_checksum.h	(revision 609243f4f1d6e7562d9c9b79e38925b36e844ac0)
+++ uspace/lib/net/include/net_checksum.h	(revision b0f00a9ed1b00bda8a286a4c4bbe625a7f410bc6)
@@ -67,4 +67,5 @@
 extern uint16_t flip_checksum(uint16_t);
 extern uint16_t ip_checksum(uint8_t *, size_t);
+extern uint64_t multicast_hash(const uint8_t addr[6]);
 
 #endif