diff --git a/sys/net/bpf.c b/sys/net/bpf.c
--- a/sys/net/bpf.c
+++ b/sys/net/bpf.c
@@ -3120,16 +3120,31 @@
 {
 }
 
+void
+bpf_tap_if(if_t ifp, u_char *pkt, u_int pktlen)
+{
+}
+
 void
 bpf_mtap(struct bpf_if *bp, struct mbuf *m)
 {
 }
 
+void
+bpf_mtap_if(if_t ifp, struct mbuf *m)
+{
+}
+
 void
 bpf_mtap2(struct bpf_if *bp, void *d, u_int l, struct mbuf *m)
 {
 }
 
+void
+bpf_mtap2_if(if_t ifp, void *data, u_int dlen, struct mbuf *m)
+{
+}
+
 void
 bpfattach(struct ifnet *ifp, u_int dlt, u_int hdrlen)
 {