diff -r f5cfa4c4d3be sys/src/cmd/vmx/virtio.c
--- a/sys/src/cmd/vmx/virtio.c	Mon Nov 27 20:34:48 2017 +0000
+++ b/sys/src/cmd/vmx/virtio.c	Wed Dec 13 22:15:03 2017 +0000
@@ -423,14 +423,14 @@
 			return (d->net.flags & VNETNOUNI) == 0;
 		if(memcmp(mac, d->net.mac, 6) == 0) return 1;
 		if(d->net.macbloom == 0) return 0;
-		return d->net.macbloom & 1ULL<<bloomhash(mac);
+		return d->net.macbloom >> bloomhash(mac) & 1;
 	}else if(memcmp(mac, bcast, 6) == 0)
 		return (d->net.flags & VNETNOBCAST) == 0;
 	else{
 		if((d->net.flags & (VNETNOMULTI|VNETALLMULTI)) != 0)
 			return (d->net.flags & VNETNOMULTI) == 0;
 		if(d->net.multibloom == 0) return 0;
-		return d->net.multibloom & 1ULL<<bloomhash(mac);
+		return d->net.multibloom >> bloomhash(mac) & 1;
 	}
 }