Fix mac build

.github/workflows/golang-test.yml

@@ -18,4 +18,33 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v2
       - name: Test
-        run: go test ./...
+        run: go test ./...
+
+  test_build:
+    strategy:
+      matrix:
+        os: [ windows, linux, darwin ]
+        go-version: [1.16.x]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Install Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: ${{ matrix.go-version }}
+
+      - name: Cache Go modules
+        uses: actions/cache@v1
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
+
+      - name: Install modules
+        run: go mod tidy
+
+      - name: run build
+        run: GOOS=${{ matrix.os }} go build .

iface/iface_darwin.go

@@ -18,7 +18,7 @@ func assignAddr(address string, tunDevice tun.Device) error {
 	ip := strings.Split(address, "/")
 	cmd := exec.Command("ifconfig", ifaceName, "inet", address, ip[0])
 	if out, err := cmd.CombinedOutput(); err != nil {
-		log.Infoln("Command: %v failed with output %s and error: ", cmd.String(), out)
+		log.Infof("Command: %v failed with output %s and error: ", cmd.String(), out)
 		return err
 	}
 	_, resolvedNet, err := net.ParseCIDR(address)