diff --git a/arch/um/drivers/net_kern.c b/arch/um/drivers/net_kern.c
index c067abbbfd97fda603c833307a55950b8a9c276b..16aa572325c9b4870c0fd2feacda2154a0a83119 100644
--- a/arch/um/drivers/net_kern.c
+++ b/arch/um/drivers/net_kern.c
@@ -310,9 +310,7 @@ static void setup_etheraddr(char *str, unsigned char *addr)
 	return;
 
 random:
-	addr[0] = 0xfe;
-	addr[1] = 0xfd;
-	random_mac(addr);
+	random_ether_addr(addr)
 }
 
 static DEFINE_SPINLOCK(devices_lock);
diff --git a/arch/um/drivers/net_user.c b/arch/um/drivers/net_user.c
index 142bcb2c7c6ab43ffccd6444dbcb173da33c4a42..f3a3f8a29c7af877d327692f2f30f89a7ef6f081 100644
--- a/arch/um/drivers/net_user.c
+++ b/arch/um/drivers/net_user.c
@@ -259,32 +259,3 @@ char *split_if_spec(char *str, ...)
 	va_end(ap);
 	return str;
 }
-
-void random_mac(unsigned char *addr)
-{
-	struct timeval tv;
-	long n;
-	unsigned int seed;
-
-	gettimeofday(&tv, NULL);
-
-	/* Assume that 20 bits of microseconds and 12 bits of the pid are
-	 * reasonably unpredictable.
-	 */
-	seed = tv.tv_usec | (os_getpid() << 20);
-	srandom(seed);
-
-	/* Don't care about endianness here - switching endianness
-	 * just rearranges what are hopefully random numbers.
-	 *
-	 * Assume that RAND_MAX > 65536, so random is called twice and
-	 * we use 16 bits of the result.
-	 */
-	n = random();
-	addr[2] = (n >> 8) & 255;
-	addr[3] = n % 255;
-
-	n = random();
-	addr[4] = (n >> 8) & 255;
-	addr[5] = n % 255;
-}
diff --git a/arch/um/include/net_user.h b/arch/um/include/net_user.h
index 99b3cea2dcdc30cf0c0af9b5e886d5887bce6819..19f207cd70fe4b3bf6ed33dee917a58622055d9a 100644
--- a/arch/um/include/net_user.h
+++ b/arch/um/include/net_user.h
@@ -50,6 +50,4 @@ extern char *split_if_spec(char *str, ...);
 
 extern int dev_netmask(void *d, void *m);
 
-extern void random_mac(unsigned char *addr);
-
 #endif