fix: paltform depended iface

iface/iface_linux.go

@@ -0,0 +1,33 @@
+package iface
+
+import (
+	log "github.com/sirupsen/logrus"
+	"github.com/vishvananda/netlink"
+	"os"
+)
+
+const (
+	interfacePrefix = "wg"
+)
+
+// assignAddr Adds IP address to the tunnel interface
+func assignAddr(iface string, address string) error {
+	attrs := netlink.NewLinkAttrs()
+	attrs.Name = iface
+
+	link := wgLink{
+		attrs: &attrs,
+	}
+
+	log.Debugf("adding address %s to interface: %s", address, iface)
+	addr, _ := netlink.ParseAddr(address)
+	err := netlink.AddrAdd(&link, addr)
+	if os.IsExist(err) {
+		log.Infof("interface %s already has the address: %s", iface, address)
+	} else if err != nil {
+		return err
+	}
+	// On linux, the link must be brought up
+	err = netlink.LinkSetUp(&link)
+	return err
+}