4 files changed, 51 insertions, 9 deletions
diff --git a/libpod/container_internal_linux.go b/libpod/container_internal_linux.go
index 847122929..cafa3c642 100644
--- a/libpod/container_internal_linux.go
+++ b/libpod/container_internal_linux.go
@@ -1,3 +1,4 @@
+//go:build linux
 // +build linux
 
 package libpod
@@ -1942,9 +1943,24 @@ func (c *Container) generateHosts(path string) (string, error) {
 	}
 	hosts := string(orig)
 	hosts += c.getHosts()
+
+	hosts = c.appendLocalhost(hosts)
+
 	return c.writeStringToRundir("hosts", hosts)
 }
 
+// based on networking mode we may want to append the localhost
+// if there isn't any record for it and also this shoud happen
+// in slirp4netns and similar network modes.
+func (c *Container) appendLocalhost(hosts string) string {
+	if !strings.Contains(hosts, "localhost") &&
+		!c.config.NetMode.IsHost() {
+		hosts += "127.0.0.1\tlocalhost\n::1\tlocalhost\n"
+	}
+
+	return hosts
+}
+
 // appendHosts appends a container's config and state pertaining to hosts to a container's
 // local hosts file. netCtr is the container from which the netNS information is
 // taken.
diff --git a/libpod/container_internal_linux_test.go b/libpod/container_internal_linux_test.go
index 1465ffbea..899f9bffd 100644
--- a/libpod/container_internal_linux_test.go
+++ b/libpod/container_internal_linux_test.go
@@ -1,3 +1,4 @@
+//go:build linux
 // +build linux
 
 package libpod
@@ -7,6 +8,7 @@ import (
 	"os"
 	"testing"
 
+	"github.com/containers/podman/v3/pkg/namespaces"
 	spec "github.com/opencontainers/runtime-spec/specs-go"
 	"github.com/stretchr/testify/assert"
 )
@@ -68,3 +70,30 @@ func TestGenerateUserGroupEntry(t *testing.T) {
 	}
 	assert.Equal(t, group, "567:x:567:567\n")
 }
+
+func TestAppendLocalhost(t *testing.T) {
+	{
+		c := Container{
+			config: &ContainerConfig{
+				ContainerNetworkConfig: ContainerNetworkConfig{
+					NetMode: namespaces.NetworkMode("slirp4netns"),
+				},
+			},
+		}
+
+		assert.Equal(t, "127.0.0.1\tlocalhost\n::1\tlocalhost\n", c.appendLocalhost(""))
+		assert.Equal(t, "127.0.0.1\tlocalhost", c.appendLocalhost("127.0.0.1\tlocalhost"))
+	}
+	{
+		c := Container{
+			config: &ContainerConfig{
+				ContainerNetworkConfig: ContainerNetworkConfig{
+					NetMode: namespaces.NetworkMode("host"),
+				},
+			},
+		}
+
+		assert.Equal(t, "", c.appendLocalhost(""))
+		assert.Equal(t, "127.0.0.1\tlocalhost", c.appendLocalhost("127.0.0.1\tlocalhost"))
+	}
+}
diff --git a/libpod/network/devices.go b/libpod/network/devices.go
index de6bb4efc..fc9aff337 100644
--- a/libpod/network/devices.go
+++ b/libpod/network/devices.go
@@ -2,12 +2,11 @@ package network
 
 import (
 	"fmt"
-	"os/exec"
 
 	"github.com/containers/common/pkg/config"
 	"github.com/containers/podman/v3/pkg/util"
-	"github.com/containers/podman/v3/utils"
 	"github.com/sirupsen/logrus"
+	"github.com/vishvananda/netlink"
 )
 
 // GetFreeDeviceName returns a device name that is unused; used when no network
@@ -52,12 +51,9 @@ func GetFreeDeviceName(config *config.Config) (string, error) {
 
 // RemoveInterface removes an interface by the given name
 func RemoveInterface(interfaceName string) error {
-	// Make sure we have the ip command on the system
-	ipPath, err := exec.LookPath("ip")
+	link, err := netlink.LinkByName(interfaceName)
 	if err != nil {
 		return err
 	}
-	// Delete the network interface
-	_, err = utils.ExecCmd(ipPath, []string{"link", "del", interfaceName}...)
-	return err
+	return netlink.LinkDel(link)
 }
diff --git a/libpod/network/network.go b/libpod/network/network.go
index 805988432..3b81ce776 100644
--- a/libpod/network/network.go
+++ b/libpod/network/network.go
@@ -194,8 +194,9 @@ func removeNetwork(config *config.Config, name string) error {
 				return errors.Wrapf(err, "failed to get live network names")
 			}
 			if util.StringInSlice(interfaceName, liveNetworkNames) {
-				if err := RemoveInterface(interfaceName); err != nil {
-					return errors.Wrapf(err, "failed to delete the network interface %q", interfaceName)
+				if err = RemoveInterface(interfaceName); err != nil {
+					// only log the error, it is not fatal
+					logrus.Infof("failed to remove network interface %s: %v", interfaceName, err)
 				}
 			}
 		}