fold sysinfo into network

the backends are network backends

src/routes/network.js

@@ -14,7 +14,10 @@ exports = module.exports = {
     setIPv4Config,
 
     getIPv6Config,
-    setIPv6Config
+    setIPv6Config,
+
+    getIPv4,
+    getIPv6,
 };
 
 const assert = require('assert'),
@@ -117,3 +120,17 @@ async function setIPv6Config(req, res, next) {
 
     next(new HttpSuccess(200, {}));
 }
+
+async function getIPv4(req, res, next) {
+    const [error, ipv4] = await safe(network.getIPv4());
+    if (error) return next(BoxError.toHttpError(error));
+
+    next(new HttpSuccess(200, { ipv4 }));
+}
+
+async function getIPv6(req, res, next) {
+    const [error, ipv6] = await safe(network.getIPv6()); // ignore any error
+    if (error) return next(BoxError.toHttpError(error));
+
+    next(new HttpSuccess(200, { ipv6 }));
+}