diff --git a/pkg/tcpip/link/ethernet/ethernet.go b/pkg/tcpip/link/ethernet/ethernet.go
index 4e54e0e8e..fe9b165c3 100644
--- a/pkg/tcpip/link/ethernet/ethernet.go
+++ b/pkg/tcpip/link/ethernet/ethernet.go
@@ -54,10 +54,7 @@ func (e *Endpoint) LinkAddress() tcpip.LinkAddress {
 
 // MTU implements stack.LinkEndpoint.
 func (e *Endpoint) MTU() uint32 {
-	if mtu := e.Endpoint.MTU(); mtu > header.EthernetMinimumSize {
-		return mtu - header.EthernetMinimumSize
-	}
-	return 0
+	return e.Endpoint.MTU()
 }
 
 // DeliverNetworkPacket implements stack.NetworkDispatcher.
diff --git a/pkg/tcpip/link/ethernet/ethernet_test.go b/pkg/tcpip/link/ethernet/ethernet_test.go
index 832dbbe1d..f51758077 100644
--- a/pkg/tcpip/link/ethernet/ethernet_test.go
+++ b/pkg/tcpip/link/ethernet/ethernet_test.go
@@ -143,21 +143,13 @@ func TestMTU(t *testing.T) {
 			maxFrameSize: 0,
 			expectedMTU:  0,
 		},
-		{
-			maxFrameSize: header.EthernetMinimumSize - 1,
-			expectedMTU:  0,
-		},
 		{
 			maxFrameSize: header.EthernetMinimumSize,
-			expectedMTU:  0,
-		},
-		{
-			maxFrameSize: header.EthernetMinimumSize + 1,
-			expectedMTU:  1,
+			expectedMTU:  header.EthernetMinimumSize,
 		},
 		{
 			maxFrameSize: maxFrameSize,
-			expectedMTU:  maxFrameSize - header.EthernetMinimumSize,
+			expectedMTU:  maxFrameSize,
 		},
 	}
 
diff --git a/test/rtnetlink/linux/setlink_test.sh b/test/rtnetlink/linux/setlink_test.sh
index 6744b5974..28ed2c486 100755
--- a/test/rtnetlink/linux/setlink_test.sh
+++ b/test/rtnetlink/linux/setlink_test.sh
@@ -20,7 +20,7 @@ source "$(dirname "$0")/rtnetlink_test.sh"
 # Create a new veth pair in the current namespace and change the MTU.
 ip link add name test_veth01 type veth peer name test_veth02
 ip link set test_veth01 mtu 3000
-ip link show test_veth01 | grep -E "mtu (2986|3000)"
+ip link show test_veth01 | grep -E "mtu 3000"
 ip link del name test_veth01
 # Check that test_veth02 has been destroyed.
 if ! wait_for ! ip link show test_veth02; then
diff --git a/test/syscalls/linux/socket_netlink_route.cc b/test/syscalls/linux/socket_netlink_route.cc
index 138c27df8..01a069da1 100644
--- a/test/syscalls/linux/socket_netlink_route.cc
+++ b/test/syscalls/linux/socket_netlink_route.cc
@@ -302,13 +302,11 @@ TEST_P(NetlinkSetLinkTest, ChangeMTU) {
   req.ifm.ifi_index = loopback_link.index;
   req.rtattr.rta_type = IFLA_MTU;
   req.rtattr.rta_len = RTA_LENGTH(sizeof(uint32_t));
-  req.mtu = 1500;
-  ASSERT_NE(req.mtu, loopback_link.mtu);
+  req.mtu = loopback_link.mtu + 10;
   EXPECT_NO_ERRNO(NetlinkRequestAckOrError(fd, kSeq, &req, sizeof(req)));
 
-  // See b/348220986, this is a known issue. The interface MTU is slightly
-  // different because of the package header size.
-  loopback_link.mtu = 1486;
+  // Update the local loopback_link's MTU to the requested value.
+  loopback_link.mtu = req.mtu;
   // Verify the new MTU.
   struct searchrequest {
     struct nlmsghdr hdr;