diff --git a/target/linux/brcm-2.4/patches/010-bcm47xx-cam_absent.patch b/target/linux/brcm-2.4/patches/010-bcm47xx-cam_absent.patch
new file mode 100644
index 0000000000..1deffc54a3
--- /dev/null
+++ b/target/linux/brcm-2.4/patches/010-bcm47xx-cam_absent.patch
@@ -0,0 +1,42 @@
+--- linux-2.4.32.orig/drivers/net/b44.h	2006-09-19 19:56:03.000000000 +0200
++++ linux-2.4.32/drivers/net/b44.h	2006-09-19 19:58:01.000000000 +0200
+@@ -122,6 +122,7 @@
+ #define  RXCONFIG_FLOW		0x00000020 /* Flow Control Enable */
+ #define  RXCONFIG_FLOW_ACCEPT	0x00000040 /* Accept Unicast Flow Control Frame */
+ #define  RXCONFIG_RFILT		0x00000080 /* Reject Filter */
++#define  RXCONFIG_CAM_ABSENT	0x00000100 /* CAM Absent */
+ #define B44_RXMAXLEN	0x0404UL /* EMAC RX Max Packet Length */
+ #define B44_TXMAXLEN	0x0408UL /* EMAC TX Max Packet Length */
+ #define B44_MDIO_CTRL	0x0410UL /* EMAC MDIO Control */
+--- linux-2.4.32.orig/drivers/net/b44.c	2006-09-19 19:56:03.000000000 +0200
++++ linux-2.4.32/drivers/net/b44.c	2006-09-19 20:08:22.000000000 +0200
+@@ -1301,6 +1301,7 @@
+ {
+ 	struct b44 *bp = dev->priv;
+ 	struct sockaddr *addr = p;
++ 	u32 val;
+ 
+ 	if (netif_running(dev))
+ 		return -EBUSY;
+@@ -1308,7 +1309,11 @@
+ 	memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
+ 
+ 	spin_lock_irq(&bp->lock);
+-	__b44_set_mac_addr(bp);
++   
++   	val = br32(B44_RXCONFIG);
++   	if (!(val & RXCONFIG_CAM_ABSENT))
++		__b44_set_mac_addr(bp);
++   
+ 	spin_unlock_irq(&bp->lock);
+ 
+ 	return 0;
+@@ -1488,7 +1493,7 @@
+ 
+ 	val = br32(B44_RXCONFIG);
+ 	val &= ~(RXCONFIG_PROMISC | RXCONFIG_ALLMULTI);
+-	if (dev->flags & IFF_PROMISC) {
++	if ((dev->flags & IFF_PROMISC) || (val & RXCONFIG_CAM_ABSENT)) {
+ 		val |= RXCONFIG_PROMISC;
+ 		bw32(B44_RXCONFIG, val);
+ 	} else {
diff --git a/target/linux/brcm-2.6/patches/010-bcm47xx-cam_absent.patch b/target/linux/brcm-2.6/patches/010-bcm47xx-cam_absent.patch
new file mode 100644
index 0000000000..51206296bc
--- /dev/null
+++ b/target/linux/brcm-2.6/patches/010-bcm47xx-cam_absent.patch
@@ -0,0 +1,42 @@
+--- linux-2.6.17.orig/drivers/net/b44.h	2006-09-19 19:56:03.000000000 +0200
++++ linux-2.6.17/drivers/net/b44.h	2006-09-19 19:58:01.000000000 +0200
+@@ -122,6 +122,7 @@
+ #define  RXCONFIG_FLOW		0x00000020 /* Flow Control Enable */
+ #define  RXCONFIG_FLOW_ACCEPT	0x00000040 /* Accept Unicast Flow Control Frame */
+ #define  RXCONFIG_RFILT		0x00000080 /* Reject Filter */
++#define  RXCONFIG_CAM_ABSENT	0x00000100 /* CAM Absent */
+ #define B44_RXMAXLEN	0x0404UL /* EMAC RX Max Packet Length */
+ #define B44_TXMAXLEN	0x0408UL /* EMAC TX Max Packet Length */
+ #define B44_MDIO_CTRL	0x0410UL /* EMAC MDIO Control */
+--- linux-2.6.17.orig/drivers/net/b44.c	2006-09-19 19:56:03.000000000 +0200
++++ linux-2.6.17/drivers/net/b44.c	2006-09-19 20:08:22.000000000 +0200
+@@ -1435,6 +1435,7 @@
+ {
+ 	struct b44 *bp = netdev_priv(dev);
+ 	struct sockaddr *addr = p;
++ 	u32 val;
+ 
+ 	if (netif_running(dev))
+ 		return -EBUSY;
+@@ -1445,7 +1446,11 @@
+ 	memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
+ 
+ 	spin_lock_irq(&bp->lock);
+-	__b44_set_mac_addr(bp);
++   
++   	val = br32(bp, B44_RXCONFIG);
++   	if (!(val & RXCONFIG_CAM_ABSENT))
++		__b44_set_mac_addr(bp);
++   
+ 	spin_unlock_irq(&bp->lock);
+ 
+ 	return 0;
+@@ -1641,7 +1646,7 @@
+ 
+ 	val = br32(bp, B44_RXCONFIG);
+ 	val &= ~(RXCONFIG_PROMISC | RXCONFIG_ALLMULTI);
+-	if (dev->flags & IFF_PROMISC) {
++	if ((dev->flags & IFF_PROMISC) || (val & RXCONFIG_CAM_ABSENT)) {
+ 		val |= RXCONFIG_PROMISC;
+ 		bw32(bp, B44_RXCONFIG, val);
+ 	} else {