--- a/sys/net/ipfw3_basic/ip_fw3_sync.c
+++ b/sys/net/ipfw3_basic/ip_fw3_sync.c
@@ -440,6 +440,7 @@ ip_fw3_sync_send_state(struct ipfw3_state *state, int cpu, int hash)
 	struct cmd_send_state cmd;
 
 	len = sizeof(struct cmd_send_state);
+	bzero(&cmd, sizeof(cmd));
 	m = m_getl(len, M_WAITOK, MT_DATA, M_PKTHDR, &nsize);
 
 	cmd.type = 1;