Parallelize integration tests better

go/daemon/daecommon/config.go

@@ -127,6 +127,8 @@ func (c *NetworkConfig) fillDefaults() {
 	}
 
 	if c.VPN.Tun.Device == "" {
+		// TODO if there are multiple Networks then each one needs a unique
+		// device name.
 		c.VPN.Tun.Device = "isle-tun"
 	}
 

go/daemon/network/network_it_test.go

@@ -25,6 +25,8 @@ func TestCreate(t *testing.T) {
 }
 
 func TestLoad(t *testing.T) {
+	t.Parallel()
+
 	t.Run("given config", func(t *testing.T) {
 		var (
 			h             = newIntegrationHarness(t)
@@ -53,6 +55,8 @@ func TestLoad(t *testing.T) {
 }
 
 func TestJoin(t *testing.T) {
+	t.Parallel()
+
 	t.Run("simple", func(t *testing.T) {
 		var (
 			h        = newIntegrationHarness(t)
@@ -82,6 +86,8 @@ func TestJoin(t *testing.T) {
 }
 
 func TestNetwork_SetConfig(t *testing.T) {
+	t.Parallel()
+
 	allocsToRoles := func(
 		hostName nebula.HostName, allocs []bootstrap.GarageHostInstance,
 	) []garage.Role {

go/daemon/network/network_it_util_test.go

@@ -129,7 +129,7 @@ func (h *integrationHarness) mkNetworkConfig(
 			c.VPN.PublicAddr = newPublicAddr()
 		}
 
-		c.VPN.Tun.Device = newTunDevice() // TODO is this necessary??
+		c.VPN.Tun.Device = newTunDevice()
 
 		c.Storage.Allocations = make(
 			[]daecommon.ConfigStorageAllocation, opts.numStorageAllocs,