Fix custom mac address with a custom cni network

The cni plugin `tuning` is required to set a custom mac address.
This plugin is configured in the default cni config file which is
packaged with podman but was not included the generated config form
`podman network create`.

Fixes #8385

Signed-off-by: Paul Holzinger <paul.holzinger@web.de>

4 files changed, 36 insertions, 0 deletions

diff --git a/libpod/network/config.go b/libpod/network/config.go
index ce8a4446c..ce351129e 100644
--- a/libpod/network/config.go
+++ b/libpod/network/config.go
@@ -129,6 +129,16 @@ func (f FirewallConfig) Bytes() ([]byte, error) {
 	return json.MarshalIndent(f, "", "\t")
 }
 
+// TuningConfig describes the tuning plugin
+type TuningConfig struct {
+	PluginType string `json:"type"`
+}
+
+// Bytes outputs the configuration as []byte
+func (f TuningConfig) Bytes() ([]byte, error) {
+	return json.MarshalIndent(f, "", "\t")
+}
+
 // DNSNameConfig describes the dns container name resolution plugin config
 type DNSNameConfig struct {
 	PluginType   string          `json:"type"`
diff --git a/libpod/network/create.go b/libpod/network/create.go
index 387f4fcd3..7e4fc574a 100644
--- a/libpod/network/create.go
+++ b/libpod/network/create.go
@@ -176,6 +176,7 @@ func createBridge(name string, options entities.NetworkCreateOptions, runtimeCon
 	plugins = append(plugins, bridge)
 	plugins = append(plugins, NewPortMapPlugin())
 	plugins = append(plugins, NewFirewallPlugin())
+	plugins = append(plugins, NewTuningPlugin())
 	// if we find the dnsname plugin or are rootless, we add configuration for it
 	// the rootless-cni-infra container has the dnsname plugin always installed
 	if (HasDNSNamePlugin(runtimeConfig.Network.CNIPluginDirs) || rootless.IsRootless()) && !options.DisableDNS {
diff --git a/libpod/network/netconflist.go b/libpod/network/netconflist.go
index 111f1715c..ee9adce14 100644
--- a/libpod/network/netconflist.go
+++ b/libpod/network/netconflist.go
@@ -119,6 +119,13 @@ func NewFirewallPlugin() FirewallConfig {
 	}
 }
 
+// NewTuningPlugin creates a generic tuning section
+func NewTuningPlugin() TuningConfig {
+	return TuningConfig{
+		PluginType: "tuning",
+	}
+}
+
 // NewDNSNamePlugin creates the dnsname config with a given
 // domainname
 func NewDNSNamePlugin(domainName string) DNSNameConfig {
diff --git a/test/e2e/create_staticmac_test.go b/test/e2e/create_staticmac_test.go
index adffdc1ca..1ac431da2 100644
--- a/test/e2e/create_staticmac_test.go
+++ b/test/e2e/create_staticmac_test.go
@@ -5,6 +5,7 @@ import (
 
 	"github.com/containers/podman/v2/pkg/rootless"
 	. "github.com/containers/podman/v2/test/utils"
+	"github.com/containers/storage/pkg/stringid"
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
 )
@@ -45,4 +46,21 @@ var _ = Describe("Podman run with --mac-address flag", func() {
 			Expect(result.OutputToString()).To(ContainSubstring("92:d0:c6:0a:29:34"))
 		}
 	})
+
+	It("Podman run --mac-address with custom network", func() {
+		net := "n1" + stringid.GenerateNonCryptoID()
+		session := podmanTest.Podman([]string{"network", "create", net})
+		session.WaitWithDefaultTimeout()
+		defer podmanTest.removeCNINetwork(net)
+		Expect(session.ExitCode()).To(BeZero())
+
+		result := podmanTest.Podman([]string{"run", "--network", net, "--mac-address", "92:d0:c6:00:29:34", ALPINE, "ip", "addr"})
+		result.WaitWithDefaultTimeout()
+		if rootless.IsRootless() {
+			Expect(result.ExitCode()).To(Equal(125))
+		} else {
+			Expect(result.ExitCode()).To(Equal(0))
+			Expect(result.OutputToString()).To(ContainSubstring("92:d0:c6:00:29:34"))
+		}
+	})
 })