diff --git a/include/net/udp.h b/include/net/udp.h
index 5348d80..925535e 100644
--- a/include/net/udp.h
+++ b/include/net/udp.h
@@ -111,6 +111,7 @@ extern atomic_t udp_memory_allocated;
 extern int sysctl_udp_mem[3];
 extern int sysctl_udp_rmem_min;
 extern int sysctl_udp_wmem_min;
+extern int sysctl_udp_port_randomization;
 
 struct sk_buff;
 
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 7e3712c..ef811c3 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -599,6 +599,13 @@ static struct ctl_table ipv4_table[] = {
 		.proc_handler	= proc_dointvec_minmax,
 		.extra1		= &zero
 	},
+	{
+		.procname	= "udp_port_randomization",
+		.data		= &sysctl_udp_port_randomization,
+		.maxlen		= sizeof(sysctl_udp_port_randomization),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec_minmax,
+	},
 	{ }
 };
 
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 1f95348..f437d9d 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -182,6 +182,9 @@ static int udp_lib_lport_inuse2(struct net *net, __u16 num,
 	return res;
 }
 
+int sysctl_udp_port_randomization = 1;
+EXPORT_SYMBOL(sysctl_udp_port_randomization);
+
 /**
  *  udp_lib_get_port  -  UDP/-Lite port lookup for IPv4 and IPv6
  *
@@ -202,6 +205,7 @@ int udp_lib_get_port(struct sock *sk, unsigned short snum,
 	struct net *net = sock_net(sk);
 
 	if (!snum) {
+		static int hint;
 		int low, high, remaining;
 		unsigned rand;
 		unsigned short first, last;
@@ -210,8 +214,13 @@ int udp_lib_get_port(struct sock *sk, unsigned short snum,
 		inet_get_local_port_range(&low, &high);
 		remaining = (high - low) + 1;
 
-		rand = net_random();
-		first = (((u64)rand * remaining) >> 32) + low;
+		if (likely(sysctl_udp_port_randomization)) {
+			rand = net_random();
+			first = (((u64)rand * remaining) >> 32) + low;
+		} else {
+			rand = 1;
+			first = hint;
+		}
 		/*
 		 * force rand to be an odd multiple of UDP_HTABLE_SIZE
 		 */
@@ -233,8 +242,11 @@ int udp_lib_get_port(struct sock *sk, unsigned short snum,
 			 */
 			do {
 				if (low <= snum && snum <= high &&
-				    !test_bit(snum >> udptable->log, bitmap))
+				    !test_bit(snum >> udptable->log, bitmap)) {
+					if (unlikely(!sysctl_udp_port_randomization))
+						hint = snum;
 					goto found;
+				}
 				snum += rand;
 			} while (snum != first);
 			spin_unlock_bh(&hslot->lock);