diff --git a/install.py b/install.py
index c53f92a..c3ba3a0 100755
--- a/install.py
+++ b/install.py
@@ -12,7 +12,7 @@ from ipaddress import IPv4Interface
 from configparser import ConfigParser
 from os.path import join, getmtime, exists
 
-os.chdir('to_system')
+os.chdir('/root/aputools/to_system')
 
 DEL = '__to_delete__'
 CFGPATH = '/root/aputools/servercfg/%s.cfg'
@@ -173,6 +173,8 @@ def network(doit):
                 if doit:
                     with open('/etc/sysconfig/network-scripts/ifcfg-%s' % ifname, 'w') as f:
                         f.write('%s\n' % '\n'.join('%s=%s' % kv for kv in content.items()))
+                    os.system('ifdown %s' % ifname)
+                    os.system('ifup %s' % ifname)
                 else:
                     dirty = 'dirty'
                     print('%s changed:' % ifname)
diff --git a/router.py b/router.py
index e552632..545d173 100644
--- a/router.py
+++ b/router.py
@@ -1,3 +1,4 @@
+import sys
 import socket
 from select import select
 from serial import serial_for_url
@@ -98,7 +99,7 @@ class AcceptHandler:
     
     :param: port offered port for routing
     :param: addr where to route
-    :param: iocls the io ahndler class, currently TcpHandler or SerialHandler
+    :param: iocls the io handler class, currently TcpHandler or SerialHandler
     :param: maxcount the maximal number of concurrent connections. defauls to 1
             as a side effect, if the destination is a web server, the traffic
             are serialized (only one connection at a time), which helps for
@@ -140,8 +141,13 @@ class AcceptHandler:
         if not self.available:
             self.pending += 1
             return
-        client, addr = self.socket.accept()
-        handler = self.iocls(client, self)
+        try:
+            client, addr = self.socket.accept()
+            handler = self.iocls(client, self)
+        except Exception as e:
+            print('ERROR creating %s(%r)' % (self.iocls.__name__, self.addr))
+            client.close()
+            return
         self.readers[client.fileno()] = handler.request
         self.readers[handler.fno] = handler.reply
         self.available -= 1
diff --git a/servercfg/apumaster.cfg b/servercfg/apumaster.cfg
index 525b36d..5ed07d3 100644
--- a/servercfg/apumaster.cfg
+++ b/servercfg/apumaster.cfg
@@ -1,9 +1,9 @@
 [NETWORK]
 address=00:0d:b9:59:1f:ac
 enp1s0=dhcp
-enp2s0=192.168.127.2/24
-enp3s0=192.168.2.3/24
-enp4s0=192.168.2.4/24
+enp2s0=192.168.2.1/24
+enp3s0=192.168.3.1/24
+enp4s0=192.168.127.1/24
 
 [ROUTER]
 3000=/dev/ttyUSB0