diff -ru /cvs/sys_old/net/bpf.c /usr/src/sys/net/bpf.c
--- /cvs/sys_old/net/bpf.c	Sun Dec 24 16:01:15 2000
+++ /usr/src/sys/net/bpf.c	Sun Dec 24 17:17:27 2000
@@ -1289,7 +1289,7 @@
 	u_int dlt, hdrlen;
 {
 	struct bpf_if *bp;
-	bp = (struct bpf_if *)malloc(sizeof(*bp), M_BPF, M_DONTWAIT);
+	bp = (struct bpf_if *)malloc(sizeof(*bp), M_BPF, M_NOWAIT);
 	if (bp == 0)
 		panic("bpfattach");
 
diff -ru /cvs/sys_old/net/bpf_compat.h /usr/src/sys/net/bpf_compat.h
--- /cvs/sys_old/net/bpf_compat.h	Sun Dec 24 16:01:14 2000
+++ /usr/src/sys/net/bpf_compat.h	Sun Dec 24 17:19:04 2000
@@ -47,6 +47,7 @@
 #define malloc(size, type, canwait) bpf_alloc(size, canwait)
 #define free(cp, type) m_free(*(struct mbuf **)(cp - 8))
 #define M_WAITOK M_TRYWAIT
+#define M_NOWAIT M_DONTWAIT
 
 /* This mapping works for our purposes. */
 #define ERESTART EINTR