Problem with TAP-Driver and Routing on Windows 7 x64

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michi7x7
OpenVpn Newbie
Posts: 2
Joined: Thu Jul 21, 2016 7:34 am

Problem with TAP-Driver and Routing on Windows 7 x64

Post by michi7x7 » Thu Jul 21, 2016 7:47 am

Hello

I'm having a problem when connecting to a company-server with a config that definitely works for others and used to work for me until today.
I was experiencing the same problem a few times yesterday, but reinstalling the TAP-driver always fixed it.

The client config is fairly simple:

Code: Select all

client
dev tun
proto tcp
remote [IP-Address] 1194
comp-lzo
resolv-retry infinite
keepalive 50 150
# ca [inline]
# cert [inline]
# key [inline]
float
nobind
ns-cert-type server

#tap-sleep 3
#route-delay 5
#route-method exe
#ip-win32 netsh
The adapter settings are all set to default (driver just installed)

This is the connection log:

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Thu Jul 21 09:31:50 2016 OpenVPN 2.3.11 x86_64-w64-mingw32 [SSL (OpenSSL)] [LZO] [PKCS11] [IPv6] built on May 10 2016
Thu Jul 21 09:31:50 2016 Windows version 6.1 (Windows 7) 64bit
Thu Jul 21 09:31:50 2016 library versions: OpenSSL 1.0.1t  3 May 2016, LZO 2.09
Thu Jul 21 09:31:51 2016 Attempting to establish TCP connection with [AF_INET]80.93.37.221:1194 [nonblock]
Thu Jul 21 09:31:52 2016 TCP connection established with [AF_INET]80.93.37.221:1194
Thu Jul 21 09:31:52 2016 TCPv4_CLIENT link local: [undef]
Thu Jul 21 09:31:52 2016 TCPv4_CLIENT link remote: [AF_INET]80.93.37.221:1194
Thu Jul 21 09:31:52 2016 [Server] Peer Connection Initiated with [AF_INET]80.93.37.221:1194
Thu Jul 21 09:31:55 2016 do_ifconfig, tt->ipv6=0, tt->did_ifconfig_ipv6_setup=0
Thu Jul 21 09:31:55 2016 open_tun, tt->ipv6=0
Thu Jul 21 09:31:55 2016 TAP-WIN32 device [LAN-Verbindung 2] opened: \\.\Global\{1165B5DB-FC17-4AC5-89F1-C81B1BA73DCD}.tap
Thu Jul 21 09:31:55 2016 Notified TAP-Windows driver to set a DHCP IP/netmask of 172.27.0.90/255.255.255.252 on interface {1165B5DB-FC17-4AC5-89F1-C81B1BA73DCD} [DHCP-serv: 172.27.0.89, lease-time: 31536000]
Thu Jul 21 09:31:55 2016 Sleeping for 3 seconds...
Thu Jul 21 09:31:58 2016 Successful ARP Flush on interface [39] {1165B5DB-FC17-4AC5-89F1-C81B1BA73DCD}
Thu Jul 21 09:32:33 2016 Warning: route gateway is not reachable on any active network adapters: 172.27.0.89
Thu Jul 21 09:32:33 2016 env_block: add PATH=C:\Windows\System32;C:\Windows;C:\Windows\System32\Wbem
Thu Jul 21 09:32:33 2016 Warning: route gateway is not reachable on any active network adapters: 172.27.0.89
Thu Jul 21 09:32:33 2016 env_block: add PATH=C:\Windows\System32;C:\Windows;C:\Windows\System32\Wbem
Thu Jul 21 09:32:33 2016 Warning: route gateway is not reachable on any active network adapters: 172.27.0.89
Thu Jul 21 09:32:33 2016 env_block: add PATH=C:\Windows\System32;C:\Windows;C:\Windows\System32\Wbem
Thu Jul 21 09:32:33 2016 Warning: route gateway is not reachable on any active network adapters: 172.27.0.89
Thu Jul 21 09:32:33 2016 env_block: add PATH=C:\Windows\System32;C:\Windows;C:\Windows\System32\Wbem
Thu Jul 21 09:32:33 2016 SYSTEM ROUTING TABLE
Thu Jul 21 09:32:33 2016 0.0.0.0 0.0.0.0 192.168.120.39 p=0 i=13 t=4 pr=3 a=142 h=0 m=10/0/0/0/0
Thu Jul 21 09:32:33 2016 127.0.0.0 255.0.0.0 127.0.0.1 p=0 i=1 t=3 pr=3 a=184 h=0 m=306/0/0/0/0
Thu Jul 21 09:32:33 2016 127.0.0.1 255.255.255.255 127.0.0.1 p=0 i=1 t=3 pr=3 a=184 h=0 m=306/0/0/0/0
Thu Jul 21 09:32:33 2016 127.255.255.255 255.255.255.255 127.0.0.1 p=0 i=1 t=3 pr=3 a=184 h=0 m=306/0/0/0/0
Thu Jul 21 09:32:33 2016 192.168.120.0 255.255.252.0 192.168.120.101 p=0 i=13 t=3 pr=3 a=142 h=0 m=266/0/0/0/0
Thu Jul 21 09:32:33 2016 192.168.120.101 255.255.255.255 192.168.120.101 p=0 i=13 t=3 pr=3 a=142 h=0 m=266/0/0/0/0
Thu Jul 21 09:32:33 2016 192.168.123.255 255.255.255.255 192.168.120.101 p=0 i=13 t=3 pr=3 a=142 h=0 m=266/0/0/0/0
Thu Jul 21 09:32:33 2016 224.0.0.0 240.0.0.0 127.0.0.1 p=0 i=1 t=3 pr=3 a=184 h=0 m=306/0/0/0/0
Thu Jul 21 09:32:33 2016 224.0.0.0 240.0.0.0 192.168.120.101 p=0 i=13 t=3 pr=3 a=179 h=0 m=266/0/0/0/0
Thu Jul 21 09:32:33 2016 224.0.0.0 240.0.0.0 0.0.0.0 p=0 i=39 t=3 pr=3 a=55 h=0 m=276/0/0/0/0
Thu Jul 21 09:32:33 2016 255.255.255.255 255.255.255.255 127.0.0.1 p=0 i=1 t=3 pr=3 a=184 h=0 m=306/0/0/0/0
Thu Jul 21 09:32:33 2016 255.255.255.255 255.255.255.255 192.168.120.101 p=0 i=13 t=3 pr=3 a=179 h=0 m=266/0/0/0/0
Thu Jul 21 09:32:33 2016 255.255.255.255 255.255.255.255 0.0.0.0 p=0 i=39 t=3 pr=3 a=55 h=0 m=276/0/0/0/0
Thu Jul 21 09:32:33 2016 SYSTEM ADAPTER LIST
Thu Jul 21 09:32:33 2016 TAP-Windows Adapter V9 #2
Thu Jul 21 09:32:33 2016   Index = 39
Thu Jul 21 09:32:33 2016   GUID = {1165B5DB-FC17-4AC5-89F1-C81B1BA73DCD}
Thu Jul 21 09:32:33 2016   IP = 169.254.128.163/255.255.0.0 
Thu Jul 21 09:32:33 2016   MAC = 00:ff:11:65:b5:db
Thu Jul 21 09:32:33 2016   GATEWAY = 0.0.0.0/255.255.255.255 
Thu Jul 21 09:32:33 2016   DHCP SERV = 0.0.0.0/255.255.255.255 
Thu Jul 21 09:32:33 2016   DHCP LEASE OBTAINED = Thu Jul 21 09:32:33 2016
Thu Jul 21 09:32:33 2016   DHCP LEASE EXPIRES  = Thu Jul 21 09:32:33 2016
Thu Jul 21 09:32:33 2016   DNS SERV =  
Thu Jul 21 09:32:33 2016 TeamViewer VPN Adapter
Thu Jul 21 09:32:33 2016   Index = 20
Thu Jul 21 09:32:33 2016   GUID = {B21B8CDD-7321-40AF-9F0D-1D82D0D37BFE}
Thu Jul 21 09:32:33 2016   IP = 0.0.0.0/0.0.0.0 
Thu Jul 21 09:32:33 2016   MAC = 00:ff:b2:1b:8c:dd
Thu Jul 21 09:32:33 2016   GATEWAY = 0.0.0.0/255.255.255.255 
Thu Jul 21 09:32:33 2016   DNS SERV =  
Thu Jul 21 09:32:33 2016 Intel(R) Dual Band Wireless-AC 7260
Thu Jul 21 09:32:33 2016   Index = 14
Thu Jul 21 09:32:33 2016   GUID = {9D93B842-5E22-44D2-B384-9662970CC045}
Thu Jul 21 09:32:33 2016   IP = 0.0.0.0/0.0.0.0 
Thu Jul 21 09:32:33 2016   MAC = 80:19:34:34:36:36
Thu Jul 21 09:32:33 2016   GATEWAY = 0.0.0.0/255.255.255.255 
Thu Jul 21 09:32:33 2016   DHCP SERV =  
Thu Jul 21 09:32:33 2016   DHCP LEASE OBTAINED = Thu Jul 21 09:32:33 2016
Thu Jul 21 09:32:33 2016   DHCP LEASE EXPIRES  = Thu Jul 21 09:32:33 2016
Thu Jul 21 09:32:33 2016   DNS SERV =  
Thu Jul 21 09:32:33 2016 Intel(R) Ethernet Connection I217-LM
Thu Jul 21 09:32:33 2016   Index = 13
Thu Jul 21 09:32:33 2016   GUID = {887B765E-4997-4596-893C-18A8BA13C1E5}
Thu Jul 21 09:32:33 2016   IP = 192.168.120.101/255.255.252.0 
Thu Jul 21 09:32:33 2016   MAC = ec:b1:d7:c1:73:70
Thu Jul 21 09:32:33 2016   GATEWAY = 192.168.120.39/255.255.255.255 
Thu Jul 21 09:32:33 2016   DHCP SERV = 192.168.121.1/255.255.255.255 
Thu Jul 21 09:32:33 2016   DHCP LEASE OBTAINED = Thu Jul 21 09:30:14 2016
Thu Jul 21 09:32:33 2016   DHCP LEASE EXPIRES  = Fri Jul 22 09:30:14 2016
Thu Jul 21 09:32:33 2016   DNS SERV = 192.168.121.1/255.255.255.255 
Thu Jul 21 09:32:33 2016 Microsoft Virtual WiFi Miniport Adapter #2
Thu Jul 21 09:32:33 2016   Index = 16
Thu Jul 21 09:32:33 2016   GUID = {FA596D87-37DA-4484-BF92-EE739F90D3E4}
Thu Jul 21 09:32:33 2016   IP = 0.0.0.0/0.0.0.0 
Thu Jul 21 09:32:33 2016   MAC = 82:19:34:34:36:36
Thu Jul 21 09:32:33 2016   GATEWAY = 0.0.0.0/255.255.255.255 
Thu Jul 21 09:32:33 2016   DNS SERV =  
Thu Jul 21 09:32:33 2016 Microsoft Virtual WiFi Miniport Adapter
Thu Jul 21 09:32:33 2016   Index = 15
Thu Jul 21 09:32:33 2016   GUID = {0E29C4B5-9495-4853-8009-2BDDE639D7F2}
Thu Jul 21 09:32:33 2016   IP = 0.0.0.0/0.0.0.0 
Thu Jul 21 09:32:33 2016   MAC = 82:19:34:34:36:37
Thu Jul 21 09:32:33 2016   GATEWAY = 0.0.0.0/255.255.255.255 
Thu Jul 21 09:32:33 2016   DHCP SERV =  
Thu Jul 21 09:32:33 2016   DHCP LEASE OBTAINED = Thu Jul 21 09:32:33 2016
Thu Jul 21 09:32:33 2016   DHCP LEASE EXPIRES  = Thu Jul 21 09:32:33 2016
Thu Jul 21 09:32:33 2016   DNS SERV =  
Thu Jul 21 09:32:33 2016 Initialization Sequence Completed With Errors ( see http://openvpn.net/faq.html#dhcpclientserv )
This is the complete routing table:

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===========================================================================
Schnittstellenliste
 39...00 ff 11 65 b5 db ......TAP-Windows Adapter V9 #2
 20...00 ff b2 1b 8c dd ......TeamViewer VPN Adapter
 14...80 19 34 34 36 36 ......Intel(R) Dual Band Wireless-AC 7260
 13...ec b1 d7 c1 73 70 ......Intel(R) Ethernet Connection I217-LM
 16...82 19 34 34 36 36 ......Microsoft Virtual WiFi Miniport Adapter #2
 15...82 19 34 34 36 37 ......Microsoft Virtual WiFi Miniport Adapter
  1...........................Software Loopback Interface 1
===========================================================================

IPv4-Routentabelle
===========================================================================
Aktive Routen:
     Netzwerkziel    Netzwerkmaske          Gateway    Schnittstelle Metrik
          0.0.0.0          0.0.0.0   192.168.120.39  192.168.120.101     10
        127.0.0.0        255.0.0.0   Auf Verbindung         127.0.0.1    306
        127.0.0.1  255.255.255.255   Auf Verbindung         127.0.0.1    306
  127.255.255.255  255.255.255.255   Auf Verbindung         127.0.0.1    306
    192.168.120.0    255.255.252.0   Auf Verbindung   192.168.120.101    266
  192.168.120.101  255.255.255.255   Auf Verbindung   192.168.120.101    266
  192.168.123.255  255.255.255.255   Auf Verbindung   192.168.120.101    266
        224.0.0.0        240.0.0.0   Auf Verbindung         127.0.0.1    306
        224.0.0.0        240.0.0.0   Auf Verbindung   192.168.120.101    266
        224.0.0.0        240.0.0.0   Auf Verbindung                27    276
  255.255.255.255  255.255.255.255   Auf Verbindung         127.0.0.1    306
  255.255.255.255  255.255.255.255   Auf Verbindung   192.168.120.101    266
  255.255.255.255  255.255.255.255   Auf Verbindung                27    276
===========================================================================
There should be a route for the connection to the endpoint 172.27.0.89 and another route for the 192.168.80.0/24 subnet.

Things I've already tried:
  • reinstalling driver (tapdelall.bat, tapadd.bat)
  • rebooting windows
  • deactivating all unused adapters
  • tap-sleep, route-delay, route-method, ip-win32 netsh in different combinations (as commented in the config file)
Is there anything else I could try?
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michi7x7
OpenVpn Newbie
Posts: 2
Joined: Thu Jul 21, 2016 7:34 am

Re: Problem with TAP-Driver and Routing on Windows 7 x64

Post by michi7x7 » Thu Jul 21, 2016 12:01 pm

Okay, this fixed it:

Code: Select all

netsh int ip reset
netsh wins reset
Windows networking is just awful.
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