//go:build !windows
package macvlan
import (
"context"
"net/netip"
"strings"
"testing"
"time"
"github.com/google/go-cmp/cmp/cmpopts"
"github.com/moby/moby/api/types/network"
"github.com/moby/moby/client"
"github.com/moby/moby/v2/daemon/libnetwork/netlabel"
"github.com/moby/moby/v2/integration/internal/container"
net "github.com/moby/moby/v2/integration/internal/network"
n "github.com/moby/moby/v2/integration/network"
"github.com/moby/moby/v2/internal/testutil"
"github.com/moby/moby/v2/internal/testutil/daemon"
"gotest.tools/v3/assert"
is "gotest.tools/v3/assert/cmp"
"gotest.tools/v3/icmd"
"gotest.tools/v3/skip"
)
func TestDockerNetworkMacvlanPersistence(t *testing.T) {
// verify the driver automatically provisions the 802.1q link (dm-dummy0.60)
skip.If(t, testEnv.IsRemoteDaemon)
skip.If(t, testEnv.IsRootless, "rootless mode has different view of network")
ctx := testutil.StartSpan(baseContext, t)
d := daemon.New(t)
d.StartWithBusybox(ctx, t)
defer d.Stop(t)
master := "dm-dummy0"
n.CreateMasterDummy(ctx, t, master)
defer n.DeleteInterface(ctx, t, master)
c := d.NewClientT(t)
netName := "dm-persist"
net.CreateNoError(ctx, t, c, netName,
net.WithMacvlan("dm-dummy0.60"),
)
assert.Check(t, n.IsNetworkAvailable(ctx, c, netName))
d.Restart(t)
assert.Check(t, n.IsNetworkAvailable(ctx, c, netName))
}
func TestDockerNetworkMacvlan(t *testing.T) {
skip.If(t, testEnv.IsRemoteDaemon)
skip.If(t, testEnv.IsRootless, "rootless mode has different view of network")
ctx := testutil.StartSpan(baseContext, t)
for _, tc := range []struct {
name string
test func(*testing.T, context.Context, client.APIClient)
}{
{
name: "Subinterface",
test: testMacvlanSubinterface,
}, {
name: "OverlapParent",
test: testMacvlanOverlapParent,
}, {
name: "OverlapParentPassthruFirst",
test: testMacvlanOverlapParentPassthruFirst,
}, {
name: "OverlapParentPassthruSecond",
test: testMacvlanOverlapParentPassthruSecond,
}, {
name: "OverlapDeleteCreatedSecond",
test: testMacvlanOverlapDeleteCreatedSecond,
}, {
name: "OverlapKeepExistingParent",
test: testMacvlanOverlapKeepExisting,
}, {
name: "NilParent",
test: testMacvlanNilParent,
}, {
name: "InternalMode",
test: testMacvlanInternalMode,
}, {
name: "MultiSubnetWithParent",
test: testMacvlanMultiSubnetWithParent,
}, {
name: "MultiSubnetNoParent",
test: testMacvlanMultiSubnetNoParent,
}, {
name: "Addressing",
test: testMacvlanAddressing,
},
} {
t.Run(tc.name, func(t *testing.T) {
testutil.StartSpan(ctx, t)
d := daemon.New(t)
t.Cleanup(func() { d.Stop(t) })
d.StartWithBusybox(ctx, t)
c := d.NewClientT(t)
tc.test(t, ctx, c)
})
// FIXME(vdemeester) clean network
}
}
func testMacvlanOverlapParent(t *testing.T, ctx context.Context, apiClient client.APIClient) {
// verify the same parent interface can be used if already in use by an existing network
// as long as neither are passthru
master := "dm-dummy0"
n.CreateMasterDummy(ctx, t, master)
defer n.DeleteInterface(ctx, t, master)
netName := "dm-subinterface"
parentName := "dm-dummy0.40"
net.CreateNoError(ctx, t, apiClient, netName,
net.WithMacvlan(parentName),
)
assert.Check(t, n.IsNetworkAvailable(ctx, apiClient, netName))
n.LinkExists(ctx, t, parentName)
overlapNetName := "dm-parent-net-overlap"
_, err := net.Create(ctx, apiClient, overlapNetName,
net.WithMacvlan(parentName),
)
assert.Check(t, err)
// delete the second network while preserving the parent link
_, err = apiClient.NetworkRemove(ctx, overlapNetName, client.NetworkRemoveOptions{})
assert.NilError(t, err)
assert.Check(t, n.IsNetworkNotAvailable(ctx, apiClient, overlapNetName))
n.LinkExists(ctx, t, parentName)
// delete the first network
_, err = apiClient.NetworkRemove(ctx, netName, client.NetworkRemoveOptions{})
assert.NilError(t, err)
assert.Check(t, n.IsNetworkNotAvailable(ctx, apiClient, netName))
n.LinkDoesntExist(ctx, t, parentName)
// verify the network delete did not delete the root link
n.LinkExists(ctx, t, master)
}
func testMacvlanOverlapParentPassthruFirst(t *testing.T, ctx context.Context, apiClient client.APIClient) {
// verify creating a second interface sharing a parent with another passthru interface is rejected
master := "dm-dummy0"
n.CreateMasterDummy(ctx, t, master)
defer n.DeleteInterface(ctx, t, master)
netName := "dm-subinterface"
parentName := "dm-dummy0.40"
net.CreateNoError(ctx, t, apiClient, netName,
net.WithMacvlanPassthru(parentName),
)
assert.Check(t, n.IsNetworkAvailable(ctx, apiClient, netName))
_, err := net.Create(ctx, apiClient, "dm-parent-net-overlap",
net.WithMacvlan(parentName),
)
assert.Check(t, err != nil)
// delete the network while preserving the parent link
_, err = apiClient.NetworkRemove(ctx, netName, client.NetworkRemoveOptions{})
assert.NilError(t, err)
assert.Check(t, n.IsNetworkNotAvailable(ctx, apiClient, netName))
// verify the network delete did not delete the predefined link
n.LinkExists(ctx, t, master)
}
func testMacvlanOverlapParentPassthruSecond(t *testing.T, ctx context.Context, apiClient client.APIClient) {
// verify creating a passthru interface sharing a parent with another interface is rejected
master := "dm-dummy0"
n.CreateMasterDummy(ctx, t, master)
defer n.DeleteInterface(ctx, t, master)
netName := "dm-subinterface"
parentName := "dm-dummy0.40"
net.CreateNoError(ctx, t, apiClient, netName,
net.WithMacvlan(parentName),
)
assert.Check(t, n.IsNetworkAvailable(ctx, apiClient, netName))
_, err := net.Create(ctx, apiClient, "dm-parent-net-overlap",
net.WithMacvlanPassthru(parentName),
)
assert.Check(t, err != nil)
// delete the network while preserving the parent link
_, err = apiClient.NetworkRemove(ctx, netName, client.NetworkRemoveOptions{})
assert.NilError(t, err)
assert.Check(t, n.IsNetworkNotAvailable(ctx, apiClient, netName))
// verify the network delete did not delete the predefined link
n.LinkExists(ctx, t, master)
}
func testMacvlanOverlapDeleteCreatedSecond(t *testing.T, ctx context.Context, apiClient client.APIClient) {
// verify that a shared created parent interface is kept when the original interface is deleted first
master := "dm-dummy0"
n.CreateMasterDummy(ctx, t, master)
defer n.DeleteInterface(ctx, t, master)
netName := "dm-subinterface"
parentName := "dm-dummy0.40"
net.CreateNoError(ctx, t, apiClient, netName,
net.WithMacvlan(parentName),
)
assert.Check(t, n.IsNetworkAvailable(ctx, apiClient, netName))
overlapNetName := "dm-parent-net-overlap"
_, err := net.Create(ctx, apiClient, overlapNetName,
net.WithMacvlan(parentName),
)
assert.Check(t, err)
// delete the original network while preserving the parent link
_, err = apiClient.NetworkRemove(ctx, netName, client.NetworkRemoveOptions{})
assert.NilError(t, err)
assert.Check(t, n.IsNetworkNotAvailable(ctx, apiClient, netName))
n.LinkExists(ctx, t, parentName)
// delete the second network
_, err = apiClient.NetworkRemove(ctx, overlapNetName, client.NetworkRemoveOptions{})
assert.NilError(t, err)
assert.Check(t, n.IsNetworkNotAvailable(ctx, apiClient, overlapNetName))
n.LinkDoesntExist(ctx, t, parentName)
// verify the network delete did not delete the root link
n.LinkExists(ctx, t, master)
}
func testMacvlanOverlapKeepExisting(t *testing.T, ctx context.Context, apiClient client.APIClient) {
// verify that deleting interfaces sharing a previously existing parent doesn't delete the
// parent
master := "dm-dummy0"
n.CreateMasterDummy(ctx, t, master)
defer n.DeleteInterface(ctx, t, master)
netName := "dm-subinterface"
net.CreateNoError(ctx, t, apiClient, netName,
net.WithMacvlan(master),
)
assert.Check(t, n.IsNetworkAvailable(ctx, apiClient, netName))
overlapNetName := "dm-parent-net-overlap"
_, err := net.Create(ctx, apiClient, overlapNetName,
net.WithMacvlan(master),
)
assert.Check(t, err)
_, err = apiClient.NetworkRemove(ctx, overlapNetName, client.NetworkRemoveOptions{})
assert.NilError(t, err)
_, err = apiClient.NetworkRemove(ctx, netName, client.NetworkRemoveOptions{})
assert.NilError(t, err)
// verify the network delete did not delete the root link
n.LinkExists(ctx, t, master)
}
func testMacvlanSubinterface(t *testing.T, ctx context.Context, apiClient client.APIClient) {
// verify the same parent interface cannot be used if already in use by an existing network
master := "dm-dummy0"
parentName := "dm-dummy0.20"
n.CreateMasterDummy(ctx, t, master)
defer n.DeleteInterface(ctx, t, master)
n.CreateVlanInterface(ctx, t, master, parentName, "20")
netName := "dm-subinterface"
net.CreateNoError(ctx, t, apiClient, netName,
net.WithMacvlan(parentName),
)
assert.Check(t, n.IsNetworkAvailable(ctx, apiClient, netName))
// delete the network while preserving the parent link
_, err := apiClient.NetworkRemove(ctx, netName, client.NetworkRemoveOptions{})
assert.NilError(t, err)
assert.Check(t, n.IsNetworkNotAvailable(ctx, apiClient, netName))
// verify the network delete did not delete the predefined link
n.LinkExists(ctx, t, parentName)
}
func testMacvlanNilParent(t *testing.T, ctx context.Context, client client.APIClient) {
// macvlan bridge mode - dummy parent interface is provisioned dynamically
netName := "dm-nil-parent"
net.CreateNoError(ctx, t, client, netName,
net.WithMacvlan(""),
)
assert.Check(t, n.IsNetworkAvailable(ctx, client, netName))
id1 := container.Run(ctx, t, client, container.WithNetworkMode(netName))
id2 := container.Run(ctx, t, client, container.WithNetworkMode(netName))
_, err := container.Exec(ctx, client, id2, []string{"ping", "-c", "1", id1})
assert.Check(t, err)
}
func testMacvlanInternalMode(t *testing.T, ctx context.Context, client client.APIClient) {
// macvlan bridge mode - dummy parent interface is provisioned dynamically
netName := "dm-internal"
net.CreateNoError(ctx, t, client, netName,
net.WithMacvlan(""),
net.WithInternal(),
)
assert.Check(t, n.IsNetworkAvailable(ctx, client, netName))
id1 := container.Run(ctx, t, client, container.WithNetworkMode(netName))
id2 := container.Run(ctx, t, client, container.WithNetworkMode(netName))
result, _ := container.Exec(ctx, client, id1, []string{"ping", "-c", "1", "8.8.8.8"})
assert.Check(t, is.Contains(result.Combined(), "Network is unreachable"))
_, err := container.Exec(ctx, client, id2, []string{"ping", "-c", "1", id1})
assert.Check(t, err)
}
func testMacvlanMultiSubnetWithParent(t *testing.T, ctx context.Context, client client.APIClient) {
const parentIfName = "dm-dummy0"
n.CreateMasterDummy(ctx, t, parentIfName)
defer n.DeleteInterface(ctx, t, parentIfName)
testMacvlanMultiSubnet(t, ctx, client, parentIfName)
}
func testMacvlanMultiSubnetNoParent(t *testing.T, ctx context.Context, client client.APIClient) {
testMacvlanMultiSubnet(t, ctx, client, "")
}
func testMacvlanMultiSubnet(t *testing.T, ctx context.Context, apiClient client.APIClient, parent string) {
netName := "dualstackbridge"
net.CreateNoError(ctx, t, apiClient, netName,
net.WithMacvlan(parent),
net.WithIPv6(),
net.WithIPAM("172.28.100.0/24", ""),
net.WithIPAM("172.28.102.0/24", "172.28.102.254"),
net.WithIPAM("2001:db8:abc2::/64", ""),
net.WithIPAM("2001:db8:abc4::/64", "2001:db8:abc4::254"),
)
assert.Check(t, n.IsNetworkAvailable(ctx, apiClient, netName))
// start dual stack containers and verify the user-specified --ip and --ip6 addresses on subnets 172.28.100.0/24 and 2001:db8:abc2::/64
id1 := container.Run(ctx, t, apiClient,
container.WithNetworkMode("dualstackbridge"),
container.WithIPv4("dualstackbridge", "172.28.100.20"),
container.WithIPv6("dualstackbridge", "2001:db8:abc2::20"),
)
id2 := container.Run(ctx, t, apiClient,
container.WithNetworkMode("dualstackbridge"),
container.WithIPv4("dualstackbridge", "172.28.100.21"),
container.WithIPv6("dualstackbridge", "2001:db8:abc2::21"),
)
c1, err := apiClient.ContainerInspect(ctx, id1, client.ContainerInspectOptions{})
assert.NilError(t, err)
// Inspect the v4 gateway to ensure no default GW was assigned
assert.Check(t, !c1.Container.NetworkSettings.Networks["dualstackbridge"].Gateway.IsValid())
// Inspect the v6 gateway to ensure no default GW was assigned
assert.Check(t, !c1.Container.NetworkSettings.Networks["dualstackbridge"].IPv6Gateway.IsValid())
// verify ipv4 connectivity to the explicit --ip address second to first
_, err = container.Exec(ctx, apiClient, id2, []string{"ping", "-c", "1", c1.Container.NetworkSettings.Networks["dualstackbridge"].IPAddress.String()})
assert.NilError(t, err)
// verify ipv6 connectivity to the explicit --ip6 address second to first
_, err = container.Exec(ctx, apiClient, id2, []string{"ping6", "-c", "1", c1.Container.NetworkSettings.Networks["dualstackbridge"].GlobalIPv6Address.String()})
assert.NilError(t, err)
// start dual stack containers and verify the user-specified --ip and --ip6 addresses on subnets 172.28.102.0/24 and 2001:db8:abc4::/64
id3 := container.Run(ctx, t, apiClient,
container.WithNetworkMode("dualstackbridge"),
container.WithIPv4("dualstackbridge", "172.28.102.20"),
container.WithIPv6("dualstackbridge", "2001:db8:abc4::20"),
)
id4 := container.Run(ctx, t, apiClient,
container.WithNetworkMode("dualstackbridge"),
container.WithIPv4("dualstackbridge", "172.28.102.21"),
container.WithIPv6("dualstackbridge", "2001:db8:abc4::21"),
)
c3, err := apiClient.ContainerInspect(ctx, id3, client.ContainerInspectOptions{})
assert.NilError(t, err)
if parent == "" {
// Inspect the v4 gateway to ensure no default GW was assigned
assert.Check(t, !c3.Container.NetworkSettings.Networks["dualstackbridge"].Gateway.IsValid())
// Inspect the v6 gateway to ensure no default GW was assigned
assert.Check(t, !c3.Container.NetworkSettings.Networks["dualstackbridge"].IPv6Gateway.IsValid())
} else {
// Inspect the v4 gateway to ensure the proper explicitly assigned default GW was assigned
assert.Check(t, is.Equal(c3.Container.NetworkSettings.Networks["dualstackbridge"].Gateway, netip.MustParseAddr("172.28.102.254")))
// Inspect the v6 gateway to ensure the proper explicitly assigned default GW was assigned
assert.Check(t, is.Equal(c3.Container.NetworkSettings.Networks["dualstackbridge"].IPv6Gateway, netip.MustParseAddr("2001:db8:abc4::254")))
}
// verify ipv4 connectivity to the explicit --ip address from third to fourth
_, err = container.Exec(ctx, apiClient, id4, []string{"ping", "-c", "1", c3.Container.NetworkSettings.Networks["dualstackbridge"].IPAddress.String()})
assert.NilError(t, err)
// verify ipv6 connectivity to the explicit --ip6 address from third to fourth
_, err = container.Exec(ctx, apiClient, id4, []string{"ping6", "-c", "1", c3.Container.NetworkSettings.Networks["dualstackbridge"].GlobalIPv6Address.String()})
assert.NilError(t, err)
}
func testMacvlanAddressing(t *testing.T, ctx context.Context, client client.APIClient) {
const parentIfName = "dm-dummy0"
n.CreateMasterDummy(ctx, t, parentIfName)
defer n.DeleteInterface(ctx, t, parentIfName)
// Ensure the default gateways, next-hops and default dev devices are properly set
netName := "dualstackbridge"
net.CreateNoError(ctx, t, client, netName,
net.WithMacvlan(parentIfName),
net.WithIPv6(),
net.WithOption("macvlan_mode", "bridge"),
net.WithIPAM("172.28.130.0/24", ""),
net.WithIPAM("2001:db8:abca::/64", "2001:db8:abca::254"),
)
assert.Check(t, n.IsNetworkAvailable(ctx, client, netName))
id1 := container.Run(ctx, t, client,
container.WithNetworkMode("dualstackbridge"),
)
// No gateway address was supplied for IPv4, check that no default gateway was set up.
result, err := container.Exec(ctx, client, id1, []string{"ip", "route"})
assert.NilError(t, err)
assert.Check(t, !strings.Contains(result.Combined(), "default via"),
"result: %s", result.Combined())
// Validate macvlan bridge mode sets the v6 gateway to the user-specified default gateway/next-hop
result, err = container.Exec(ctx, client, id1, []string{"ip", "-6", "route"})
assert.NilError(t, err)
assert.Check(t, is.Contains(result.Combined(), "default via 2001:db8:abca::254 dev eth0"))
}
// Check that a macvlan interface with '--ipv6=false' doesn't get kernel-assigned
// IPv6 addresses, but the loopback interface does still have an IPv6 address ('::1').
// Also check that with '--ipv4=false', there's no IPAM-assigned IPv4 address.
func TestMacvlanIPAM(t *testing.T) {
skip.If(t, testEnv.IsRemoteDaemon)
skip.If(t, testEnv.IsRootless, "rootless mode has different view of network")
ctx := testutil.StartSpan(baseContext, t)
d := daemon.New(t)
d.StartWithBusybox(ctx, t)
defer d.Stop(t)
testcases := []struct {
name string
apiVersion string
enableIPv4 bool
enableIPv6 bool
expIPv4 bool
}{
{
name: "dual stack",
enableIPv4: true,
enableIPv6: true,
},
{
name: "v4 only",
enableIPv4: true,
},
{
name: "v6 only",
enableIPv6: true,
},
{
name: "no ipam",
},
{
name: "enableIPv4 ignored",
apiVersion: "1.46",
enableIPv4: false,
expIPv4: true,
},
}
var (
subnetv4 = netip.MustParsePrefix("10.66.77.0/24")
subnetv6 = netip.MustParsePrefix("2001:db8:abcd::/64")
)
for _, tc := range testcases {
t.Run(tc.name, func(t *testing.T) {
ctx := testutil.StartSpan(ctx, t)
c := d.NewClientT(t, client.WithAPIVersion(tc.apiVersion))
netOpts := []func(*client.NetworkCreateOptions){
net.WithMacvlan(""),
net.WithOption("macvlan_mode", "bridge"),
net.WithIPv4(tc.enableIPv4),
net.WithIPAMConfig(
network.IPAMConfig{
Subnet: subnetv4,
IPRange: netip.MustParsePrefix("10.66.77.64/30"),
Gateway: netip.MustParseAddr("10.66.77.1"),
AuxAddress: map[string]netip.Addr{
"inrange": netip.MustParseAddr("10.66.77.65"),
"outofrange": netip.MustParseAddr("10.66.77.128"),
},
},
network.IPAMConfig{
Subnet: subnetv6,
IPRange: netip.MustParsePrefix("2001:db8:abcd::/120"),
},
),
}
if tc.enableIPv6 {
netOpts = append(netOpts, net.WithIPv6())
}
const netName = "macvlannet"
net.CreateNoError(ctx, t, c, netName, netOpts...)
defer c.NetworkRemove(ctx, netName, client.NetworkRemoveOptions{})
assert.Check(t, n.IsNetworkAvailable(ctx, c, netName))
id := container.Run(ctx, t, c, container.WithNetworkMode(netName))
defer c.ContainerRemove(ctx, id, client.ContainerRemoveOptions{Force: true})
loRes := container.ExecT(ctx, t, c, id, []string{"ip", "a", "show", "dev", "lo"})
assert.Check(t, is.Contains(loRes.Combined(), " inet "))
assert.Check(t, is.Contains(loRes.Combined(), " inet6 "))
wantSubnetStatus := make(map[netip.Prefix]network.SubnetStatus)
eth0Res := container.ExecT(ctx, t, c, id, []string{"ip", "a", "show", "dev", "eth0"})
if tc.enableIPv4 || tc.expIPv4 {
assert.Check(t, is.Contains(eth0Res.Combined(), " inet "),
"Expected IPv4 in: %s", eth0Res.Combined())
wantSubnetStatus[subnetv4] = network.SubnetStatus{
IPsInUse: 6, // network, gateway, 2x aux, broadcast, container
DynamicIPsAvailable: 2, // container, aux "inrange"
}
} else {
assert.Check(t, !strings.Contains(eth0Res.Combined(), " inet "),
"Expected no IPv4 in: %s", eth0Res.Combined())
}
if tc.enableIPv6 {
assert.Check(t, is.Contains(eth0Res.Combined(), " inet6 "),
"Expected IPv6 in: %s", eth0Res.Combined())
wantSubnetStatus[subnetv6] = network.SubnetStatus{
IPsInUse: 2, // subnet-router anycast, container
DynamicIPsAvailable: 254,
}
} else {
assert.Check(t, !strings.Contains(eth0Res.Combined(), " inet6 "),
"Expected no IPv6 in: %s", eth0Res.Combined())
}
sysctlRes := container.ExecT(ctx, t, c, id, []string{"sysctl", "-n", "net.ipv6.conf.eth0.disable_ipv6"})
expDisableIPv6 := "1"
if tc.enableIPv6 {
expDisableIPv6 = "0"
}
assert.Check(t, is.Equal(strings.TrimSpace(sysctlRes.Combined()), expDisableIPv6))
cc := d.NewClientT(t, client.WithAPIVersion("1.52"))
res, err := cc.NetworkInspect(ctx, netName, client.NetworkInspectOptions{})
if assert.Check(t, err) && assert.Check(t, res.Network.Status != nil) {
assert.Check(t, is.DeepEqual(wantSubnetStatus, res.Network.Status.IPAM.Subnets, cmpopts.EquateEmpty()))
}
_ = cc.Close()
cc = d.NewClientT(t, client.WithAPIVersion("1.51"))
res, err = cc.NetworkInspect(ctx, netName, client.NetworkInspectOptions{})
assert.Check(t, err)
assert.Check(t, res.Network.Status == nil)
_ = cc.Close()
})
}
}
// MACVLAN networks are allowed to be assigned IPAM subnets that overlap with
// other MACVLAN networks' IPAM subnets. But no two MACVLAN endpoints may be
// assigned the same address, even when the endpoints are attached to different
// networks. The assignment of an address to an endpoint on one network may
// therefore reduce the number of available addresses to assign to other
// networks' endpoints.
func TestMacvlanIPAMOverlap(t *testing.T) {
skip.If(t, testEnv.IsRemoteDaemon)
skip.If(t, testEnv.IsRootless, "rootless mode has different view of network")
ctx := testutil.StartSpan(baseContext, t)
d := daemon.New(t)
d.StartWithBusybox(ctx, t)
defer d.Stop(t)
c := d.NewClientT(t)
checkNetworkIPAMState := func(networkID string, want map[netip.Prefix]network.SubnetStatus) bool {
t.Helper()
res, err := c.NetworkInspect(ctx, networkID, client.NetworkInspectOptions{})
if assert.Check(t, err) && assert.Check(t, res.Network.Status != nil) {
return assert.Check(t, is.DeepEqual(want, res.Network.Status.IPAM.Subnets, cmpopts.EquateEmpty()))
}
return false
}
// Create three networks with joined and overlapped IPAM ranges
// and verify that the IPAM state is correct
const (
netName1 = "macvlannet1"
netName2 = "macvlannet2"
netName3 = "macvlannet3"
)
cidrv4 := netip.MustParsePrefix("192.168.0.0/24")
cidrv6 := netip.MustParsePrefix("2001:db8:abcd::/64")
net.CreateNoError(ctx, t, c, netName1,
net.WithMacvlan(""),
net.WithIPv6(),
net.WithIPAMConfig(
network.IPAMConfig{
Subnet: cidrv4,
IPRange: netip.MustParsePrefix("192.168.0.0/25"),
Gateway: netip.MustParseAddr("192.168.0.1"),
AuxAddress: map[string]netip.Addr{
"reserved": netip.MustParseAddr("192.168.0.100"),
},
},
network.IPAMConfig{
Subnet: cidrv6,
IPRange: netip.MustParsePrefix("2001:db8:abcd::/124"),
},
),
)
defer c.NetworkRemove(ctx, netName1, client.NetworkRemoveOptions{})
assert.Check(t, n.IsNetworkAvailable(ctx, c, netName1))
checkNetworkIPAMState(netName1, map[netip.Prefix]network.SubnetStatus{
cidrv4: {
IPsInUse: 4,
DynamicIPsAvailable: 125,
},
cidrv6: {
IPsInUse: 1,
DynamicIPsAvailable: 15,
},
})
net.CreateNoError(ctx, t, c, netName2,
net.WithMacvlan(""),
net.WithIPv6(),
net.WithIPAMConfig(
network.IPAMConfig{
Subnet: cidrv4,
IPRange: netip.MustParsePrefix("192.168.0.0/24"),
},
network.IPAMConfig{
Subnet: cidrv6,
IPRange: netip.MustParsePrefix("2001:db8:abcd::/120"),
},
),
)
defer c.NetworkRemove(ctx, netName2, client.NetworkRemoveOptions{})
assert.Check(t, n.IsNetworkAvailable(ctx, c, netName2))
checkNetworkIPAMState(netName2, map[netip.Prefix]network.SubnetStatus{
cidrv4: {
IPsInUse: 4,
DynamicIPsAvailable: 252,
},
cidrv6: {
IPsInUse: 1,
DynamicIPsAvailable: 255,
},
})
net.CreateNoError(ctx, t, c, netName3,
net.WithMacvlan(""),
net.WithIPv6(),
net.WithIPAMConfig(
network.IPAMConfig{
Subnet: cidrv4,
IPRange: netip.MustParsePrefix("192.168.0.128/25"),
},
network.IPAMConfig{
Subnet: cidrv6,
IPRange: netip.MustParsePrefix("2001:db8:abcd::80/124"),
},
),
)
defer c.NetworkRemove(ctx, netName3, client.NetworkRemoveOptions{})
assert.Check(t, n.IsNetworkAvailable(ctx, c, netName3))
checkNetworkIPAMState(netName3, map[netip.Prefix]network.SubnetStatus{
cidrv4: {
IPsInUse: 4,
DynamicIPsAvailable: 127,
},
cidrv6: {
IPsInUse: 1,
DynamicIPsAvailable: 16,
},
})
// Create a container on one of the networks
id := container.Run(ctx, t, c, container.WithNetworkMode(netName1))
defer c.ContainerRemove(ctx, id, client.ContainerRemoveOptions{Force: true})
// Verify that the IPAM status of all three networks are affected.
checkNetworkIPAMState(netName1, map[netip.Prefix]network.SubnetStatus{
cidrv4: {
IPsInUse: 5,
DynamicIPsAvailable: 124,
},
cidrv6: {
IPsInUse: 2,
DynamicIPsAvailable: 14,
},
})
checkNetworkIPAMState(netName2, map[netip.Prefix]network.SubnetStatus{
cidrv4: {
IPsInUse: 5,
DynamicIPsAvailable: 251,
},
cidrv6: {
IPsInUse: 2,
DynamicIPsAvailable: 254,
},
})
checkNetworkIPAMState(netName3, map[netip.Prefix]network.SubnetStatus{
cidrv4: {
IPsInUse: 5,
DynamicIPsAvailable: 127,
},
cidrv6: {
IPsInUse: 2,
DynamicIPsAvailable: 16,
},
})
}
// TestMACVlanDNS checks whether DNS is forwarded, with/without a parent
// interface, and with '--internal'. Note that there's no attempt here to give
// the macvlan network external connectivity - when this test supplies a parent
// interface, it's a dummy. External DNS lookups only work because the daemon is
// configured to see a host resolver on a loopback interface, so the external DNS
// lookup happens in the host's namespace. The test is checking that an
// automatically configured dummy interface causes the network to behave as if it
// was '--internal'.
func TestMACVlanDNS(t *testing.T) {
skip.If(t, testEnv.IsRootless, "rootless mode has different view of network")
ctx := testutil.StartSpan(baseContext, t)
net.StartDaftDNS(t, "127.0.0.1")
d := daemon.New(t, daemon.WithResolvConf(net.GenResolvConf("127.0.0.1")))
d.StartWithBusybox(ctx, t)
t.Cleanup(func() { d.Stop(t) })
c := d.NewClientT(t)
const parentIfName = "dm-dummy0"
n.CreateMasterDummy(ctx, t, parentIfName)
defer n.DeleteInterface(ctx, t, parentIfName)
const netName = "macvlan-dns-net"
testcases := []struct {
name string
parent string
internal bool
expDNS bool
}{
{
name: "with parent",
parent: parentIfName,
// External DNS should be used (even though the network has no external connectivity).
expDNS: true,
},
{
name: "no parent",
// External DNS should not be used, equivalent to '--internal'.
},
{
name: "with parent, internal",
parent: parentIfName,
internal: true,
expDNS: false,
},
}
for _, tc := range testcases {
t.Run(tc.name, func(t *testing.T) {
ctx := testutil.StartSpan(ctx, t)
createOpts := []func(*client.NetworkCreateOptions){
net.WithMacvlan(tc.parent),
}
if tc.internal {
createOpts = append(createOpts, net.WithInternal())
}
net.CreateNoError(ctx, t, c, netName, createOpts...)
defer c.NetworkRemove(ctx, netName, client.NetworkRemoveOptions{})
ctrId := container.Run(ctx, t, c, container.WithNetworkMode(netName))
defer c.ContainerRemove(ctx, ctrId, client.ContainerRemoveOptions{Force: true})
res, err := container.Exec(ctx, c, ctrId, []string{"nslookup", "test.example"})
assert.NilError(t, err)
if tc.expDNS {
assert.Check(t, is.Equal(res.ExitCode, 0))
assert.Check(t, is.Contains(res.Stdout(), net.DNSRespAddr))
} else {
assert.Check(t, is.Equal(res.ExitCode, 1))
assert.Check(t, is.Contains(res.Stdout(), "SERVFAIL"))
}
})
}
}
// TestPointToPoint checks that no gateway is reserved for a macvlan network
// with no parent interface (an "internal" network).
func TestPointToPoint(t *testing.T) {
ctx := testutil.StartSpan(baseContext, t)
apiClient := testEnv.APIClient()
const netName = "p2pmacvlan"
net.CreateNoError(ctx, t, apiClient, netName,
net.WithMacvlan(""),
net.WithIPAM("192.168.135.0/31", ""),
)
defer net.RemoveNoError(ctx, t, apiClient, netName)
const ctrName = "ctr1"
id := container.Run(ctx, t, apiClient,
container.WithNetworkMode(netName),
container.WithName(ctrName),
)
defer apiClient.ContainerRemove(ctx, id, client.ContainerRemoveOptions{Force: true})
attachCtx, cancel := context.WithTimeout(ctx, 5*time.Second)
defer cancel()
res := container.RunAttach(attachCtx, t, apiClient,
container.WithCmd([]string{"ping", "-c1", "-W3", ctrName}...),
container.WithNetworkMode(netName),
)
defer apiClient.ContainerRemove(ctx, res.ContainerID, client.ContainerRemoveOptions{Force: true})
assert.Check(t, is.Equal(res.ExitCode, 0))
assert.Check(t, is.Equal(res.Stderr.Len(), 0))
assert.Check(t, is.Contains(res.Stdout.String(), "1 packets transmitted, 1 packets received"))
}
func TestEndpointWithCustomIfname(t *testing.T) {
skip.If(t, testEnv.IsRemoteDaemon)
skip.If(t, testEnv.IsRootless, "rootless mode has different view of network")
ctx := setupTest(t)
apiClient := testEnv.APIClient()
const master = "dm-dummy0"
n.CreateMasterDummy(ctx, t, master)
defer n.DeleteInterface(ctx, t, master)
// create a network specifying the desired sub-interface name
const netName = "macvlan-custom-ifname"
net.CreateNoError(ctx, t, apiClient, netName, net.WithMacvlan("dm-dummy0.60"))
ctrID := container.Run(ctx, t, apiClient,
container.WithCmd("ip", "-o", "link", "show", "foobar"),
container.WithEndpointSettings(netName, &network.EndpointSettings{
DriverOpts: map[string]string{
netlabel.Ifname: "foobar",
},
}))
defer container.Remove(ctx, t, apiClient, ctrID, client.ContainerRemoveOptions{Force: true})
out, err := container.Output(ctx, apiClient, ctrID)
assert.NilError(t, err)
assert.Assert(t, strings.Contains(out.Stdout, ": foobar@if"), "expected ': foobar@if' in 'ip link show':\n%s", out.Stdout)
}
// TestParentDown checks that when a macvlan's parent is down, a container can still
// be attached.
// Regression test for https://github.com/moby/moby/issues/49593
func TestParentDown(t *testing.T) {
skip.If(t, testEnv.IsRemoteDaemon)
skip.If(t, testEnv.IsRootless, "rootless mode has different view of network")
ctx := setupTest(t)
apiClient := testEnv.APIClient()
const tap = "dummytap0"
res := icmd.RunCommand("ip", "tuntap", "add", "mode", "tap", tap)
res.Assert(t, icmd.Success)
defer icmd.RunCommand("ip", "link", "del", tap)
const netName = "testnet-macvlan"
net.CreateNoError(ctx, t, apiClient, netName,
net.WithMacvlan(tap),
net.WithIPv6(),
)
ctrID := container.Run(ctx, t, apiClient, container.WithNetworkMode(netName))
defer container.Remove(ctx, t, apiClient, ctrID, client.ContainerRemoveOptions{Force: true})
}