diff --git a/target/linux/brcm47xx/patches-2.6.36/018-wgt634u_mac_address_parser_fix.patch b/target/linux/brcm47xx/patches-2.6.36/018-wgt634u_mac_address_parser_fix.patch
new file mode 100644
index 0000000000..17d4ed610a
--- /dev/null
+++ b/target/linux/brcm47xx/patches-2.6.36/018-wgt634u_mac_address_parser_fix.patch
@@ -0,0 +1,20 @@
+--- a/arch/mips/include/asm/mach-bcm47xx/nvram.h
++++ b/arch/mips/include/asm/mach-bcm47xx/nvram.h
+@@ -39,8 +39,15 @@ extern int nvram_getenv(char *name, char
+ 
+ static inline void nvram_parse_macaddr(char *buf, u8 *macaddr)
+ {
+-	sscanf(buf, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", &macaddr[0], &macaddr[1],
+-	       &macaddr[2], &macaddr[3], &macaddr[4], &macaddr[5]);
++	if (strchr(buf, ':')) {
++		sscanf(buf, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", &macaddr[0], &macaddr[1],
++			&macaddr[2], &macaddr[3], &macaddr[4], &macaddr[5]);
++	} else if (strchr(buf, '-')) {
++		sscanf(buf, "%hhx-%hhx-%hhx-%hhx-%hhx-%hhx", &macaddr[0], &macaddr[1],
++			&macaddr[2], &macaddr[3], &macaddr[4], &macaddr[5]);
++	} else {
++		printk(KERN_WARNING "Can not parse mac address: %s\n", buf);
++	}
+ }
+ 
+ #endif
diff --git a/target/linux/brcm47xx/patches-2.6.37/018-wgt634u_mac_address_parser_fix.patch b/target/linux/brcm47xx/patches-2.6.37/018-wgt634u_mac_address_parser_fix.patch
new file mode 100644
index 0000000000..17d4ed610a
--- /dev/null
+++ b/target/linux/brcm47xx/patches-2.6.37/018-wgt634u_mac_address_parser_fix.patch
@@ -0,0 +1,20 @@
+--- a/arch/mips/include/asm/mach-bcm47xx/nvram.h
++++ b/arch/mips/include/asm/mach-bcm47xx/nvram.h
+@@ -39,8 +39,15 @@ extern int nvram_getenv(char *name, char
+ 
+ static inline void nvram_parse_macaddr(char *buf, u8 *macaddr)
+ {
+-	sscanf(buf, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", &macaddr[0], &macaddr[1],
+-	       &macaddr[2], &macaddr[3], &macaddr[4], &macaddr[5]);
++	if (strchr(buf, ':')) {
++		sscanf(buf, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", &macaddr[0], &macaddr[1],
++			&macaddr[2], &macaddr[3], &macaddr[4], &macaddr[5]);
++	} else if (strchr(buf, '-')) {
++		sscanf(buf, "%hhx-%hhx-%hhx-%hhx-%hhx-%hhx", &macaddr[0], &macaddr[1],
++			&macaddr[2], &macaddr[3], &macaddr[4], &macaddr[5]);
++	} else {
++		printk(KERN_WARNING "Can not parse mac address: %s\n", buf);
++	}
+ }
+ 
+ #endif