diff --git a/src/dorkbox/network/DnsServer.java b/src/dorkbox/network/DnsServer.java
index 9df4c9f9..f6a0f8be 100644
--- a/src/dorkbox/network/DnsServer.java
+++ b/src/dorkbox/network/DnsServer.java
@@ -170,11 +170,11 @@ class DnsServer extends Shutdownable {
                     .childHandler(new DnsServerHandler(logger));
 
         // have to check options.host for null. we don't bind to 0.0.0.0, we bind to "null" to get the "any" address!
-        if (hostName != null) {
-            tcpBootstrap.localAddress(hostName, tcpPort);
+        if (hostName.equals("0.0.0.0")) {
+            tcpBootstrap.localAddress(tcpPort);
         }
         else {
-            tcpBootstrap.localAddress(tcpPort);
+            tcpBootstrap.localAddress(hostName, tcpPort);
         }
 
 
@@ -187,11 +187,11 @@ class DnsServer extends Shutdownable {
             // android ONLY supports OIO (not NIO)
             udpBootstrap.channel(OioDatagramChannel.class);
         }
-        else if (OS.isLinux()) {
+        else if (OS.isLinux() && NativeLibrary.isAvailable()) {
             // JNI network stack is MUCH faster (but only on linux)
             udpBootstrap.channel(EpollDatagramChannel.class);
         }
-        else if (OS.isMacOsX()) {
+        else if (OS.isMacOsX() && NativeLibrary.isAvailable()) {
             // JNI network stack is MUCH faster (but only on macosx)
             udpBootstrap.channel(KQueueDatagramChannel.class);
         }
diff --git a/src/dorkbox/network/Server.java b/src/dorkbox/network/Server.java
index a206e4ae..fdff0720 100644
--- a/src/dorkbox/network/Server.java
+++ b/src/dorkbox/network/Server.java
@@ -230,11 +230,11 @@ class Server<C extends Connection> extends EndPointServer {
                                                                              registrationWrapper));
 
             // have to check options.host for null. we don't bind to 0.0.0.0, we bind to "null" to get the "any" address!
-            if (!hostName.equals("0.0.0.0")) {
-                tcpBootstrap.localAddress(hostName, tcpPort);
+            if (hostName.equals("0.0.0.0")) {
+                tcpBootstrap.localAddress(tcpPort);
             }
             else {
-                tcpBootstrap.localAddress(tcpPort);
+                tcpBootstrap.localAddress(hostName, tcpPort);
             }