Fix #19100 and fix a typo

Signed-off-by: Lei Jitang <leijitang@huawei.com>

daemon/start.go

@@ -31,12 +31,22 @@ func (daemon *Daemon) ContainerStart(name string, hostConfig *containertypes.Hos
 		// creating a container, not during start.
 		if hostConfig != nil {
 			logrus.Warn("DEPRECATED: Setting host configuration options when the container starts is deprecated and will be removed in Docker 1.12")
+			oldNetworkMode := container.HostConfig.NetworkMode
 			if err := daemon.setSecurityOptions(container, hostConfig); err != nil {
 				return err
 			}
 			if err := daemon.setHostConfig(container, hostConfig); err != nil {
 				return err
 			}
+			newNetworkMode := container.HostConfig.NetworkMode
+			if string(oldNetworkMode) != string(newNetworkMode) {
+				// if user has change the network mode on starting, clean up the
+				// old networks. It is a deprecated feature and will be removed in Docker 1.12
+				container.NetworkSettings.Networks = nil
+				if err := container.ToDisk(); err != nil {
+					return err
+				}
+			}
 			container.InitDNSHostConfig()
 		}
 	} else {

integration-cli/docker_cli_network_unix_test.go

@@ -924,7 +924,7 @@ func (s *DockerNetworkSuite) TestDockerNetworkInspectCreatedContainer(c *check.C
 	c.Assert(networks, checker.Contains, "bridge", check.Commentf("Should return 'bridge' network"))
 }
 
-func (s *DockerNetworkSuite) TestDockerNetworkRestartWithMulipleNetworks(c *check.C) {
+func (s *DockerNetworkSuite) TestDockerNetworkRestartWithMultipleNetworks(c *check.C) {
 	dockerCmd(c, "network", "create", "test")
 	dockerCmd(c, "run", "--name=foo", "-d", "busybox", "top")
 	c.Assert(waitRun("foo"), checker.IsNil)
@@ -1081,3 +1081,46 @@ func (s *DockerSuite) TestUserDefinedNetworkConnectDisconnectLink(c *check.C) {
 	_, _, err = dockerCmdWithError("exec", "second", "ping", "-c", "1", "FirstInFoo2")
 	c.Assert(err, check.IsNil)
 }
+
+// #19100 This is a deprecated feature test, it should be remove in Docker 1.12
+func (s *DockerNetworkSuite) TestDockerNetworkStartAPIWithHostconfig(c *check.C) {
+	netName := "test"
+	conName := "foo"
+	dockerCmd(c, "network", "create", netName)
+	dockerCmd(c, "create", "--name", conName, "busybox", "top")
+
+	config := map[string]interface{}{
+		"HostConfig": map[string]interface{}{
+			"NetworkMode": netName,
+		},
+	}
+	_, _, err := sockRequest("POST", "/containers/"+conName+"/start", config)
+	c.Assert(err, checker.IsNil)
+	c.Assert(waitRun(conName), checker.IsNil)
+	networks, err := inspectField(conName, "NetworkSettings.Networks")
+	c.Assert(err, checker.IsNil)
+	c.Assert(networks, checker.Contains, netName, check.Commentf(fmt.Sprintf("Should contain '%s' network", netName)))
+	c.Assert(networks, checker.Not(checker.Contains), "bridge", check.Commentf("Should not contain 'bridge' network"))
+}
+
+func (s *DockerNetworkSuite) TestDockerNetworkDisconnectDefault(c *check.C) {
+	netWorkName1 := "test1"
+	netWorkName2 := "test2"
+	containerName := "foo"
+
+	dockerCmd(c, "network", "create", netWorkName1)
+	dockerCmd(c, "network", "create", netWorkName2)
+	dockerCmd(c, "create", "--name", containerName, "busybox", "top")
+	dockerCmd(c, "network", "connect", netWorkName1, containerName)
+	dockerCmd(c, "network", "connect", netWorkName2, containerName)
+	dockerCmd(c, "network", "disconnect", "bridge", containerName)
+
+	dockerCmd(c, "start", containerName)
+	c.Assert(waitRun(containerName), checker.IsNil)
+	networks, err := inspectField(containerName, "NetworkSettings.Networks")
+	c.Assert(err, checker.IsNil)
+	c.Assert(networks, checker.Contains, netWorkName1, check.Commentf(fmt.Sprintf("Should contain '%s' network", netWorkName1)))
+	c.Assert(networks, checker.Contains, netWorkName2, check.Commentf(fmt.Sprintf("Should contain '%s' network", netWorkName2)))
+	c.Assert(networks, checker.Not(checker.Contains), "bridge", check.Commentf("Should not contain 'bridge' network"))
+
+}