handle ipv6 addresses suffixed with scope id

plugins/net.js

@@ -105,13 +105,16 @@ module.exports = ({ scope = 'device', host, port, external, allowHalfOpen, pause
       // We want to avoid using `host` if the target scope is public and some
       // external host (like example.com) is defined.
       const externalHost = targetScope === 'public' && external
-      const resultHost = externalHost || host || scopes.host(targetScope)
+      let resultHost = externalHost || host || scopes.host(targetScope)
 
       if (resultHost == null) {
         // The device has no network interface for a given `targetScope`.
         return null
       }
 
+      // Remove IPv6 scopeid suffix, if any, e.g. `%wlan0`
+      resultHost = resultHost.replace(/(\%\w+)$/, '')
+
       return toAddress(resultHost, port)
     }
   }

test/plugs.js

@@ -128,6 +128,25 @@ tape('combined, ipv6', function (t) {
   })
 })
 
+if (has_ipv6)
+tape('stringify() does not show scopeid from ipv6', function (t) {
+  var combined = Compose([
+    Net({
+      scope: 'private',
+      port: 4848,
+      host: 'fe80::1065:74a4:4016:6266%wlan0'
+    }),
+    shs
+  ])
+  var addr = combined.stringify('private')
+  t.equal(
+    addr,
+    'net:fe80::1065:74a4:4016:6266:4848~shs:' +
+    keys.publicKey.toString('base64')
+  )
+  t.end()
+})
+
 tape('net: do not listen on all addresses', function (t) {
   var combined = Compose([
     Net({
@@ -361,7 +380,7 @@ function testAbort (name, combined) {
         close(function() {t.end()})
       }, 500)
     })
-    
+
     abort()
 
   })