我想从我的 Windows 7 Enterprise PC 连接到 OpenVPN 服务器。我安装了 OpenVPN 客户端版本 2.1.1。
我目前有两个问题：
1) 启动 OpenVPN GUI 并连接后，连接过程一切顺利。但在我收到“初始化序列完成”后，我的 Wifi 网络适配器突然似乎被禁用了 O_O 当然，这会破坏包括 VPN 隧道在内的所有 Internet 连接，因此在日志中它看起来像：
...
Sat Mar 09 11:28:18 2013 Initialization Sequence Completed
Sat Mar 09 11:28:25 2013 Connection reset, restarting [0]
Sat Mar 09 11:28:25 2013 TCP/UDP: Closing socket
Sat Mar 09 11:28:25 2013 SIGUSR1[soft,connection-reset] received, process restarting
Sat Mar 09 11:28:25 2013 Restart pause, 5 second(s)
...
如果我通过网络连接控制面板手动启用无线网络适配器，OpenVPN 第二次连接成功（至少，它显示“初始化序列已完成”并且托盘中的图标变为绿色）但这里出现了另一个问题：
2) 第二次成功连接后，我与所有 VPN 主机的连接都为零。我怀疑这涉及到路由，因为当我尝试连接tracertVPN 后面的主机时，跟踪会经过主 WiFi 路由器，这肯定是错误的。
最后但并非最不重要的一点是，这个问题是可以稳定重现的。第一个问题总是会发生，但第二个问题只在约 70% 的情况下发生，这意味着有时我可以从第二次尝试开始连接并正常工作。
我有另一台笔记本电脑 - 也是 Windows 7，使用同一个 WiFi 网络，同一个 OpenVPN 版本 - 连接非常顺畅 (?!)。
有人遇到过类似的行为吗？有什么线索吗？
更新型多巴胺
尝试删除网络适配器的解决方案OpenVPN：Windows 7 x64 客户端无法看到远程 LAN，但 XP 客户端可以。删除所有Microsoft ISATAP xxx适配器后，第一次有效，但只持续到重新启动。第二次无效，所以我认为这纯粹是与其他事情的巧合。
UPD2：详细日志
当我重新启动电脑时，路由表如下所示：
===========================================================================
Interface List
17...00 ff ca 1c 39 86 ......TAP-Win32 Adapter V9
13...20 16 d8 91 32 c4 ......Bluetooth Device (Personal Area Network)
12...84 3a 4b 12 44 f8 ......Intel(R) Centrino(R) Advanced-N 6205
11...e0 db 55 e9 c0 17 ......Intel(R) 82579LM Gigabit Network Connection
1...........................Software Loopback Interface 1
18...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter
19...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #2
16...00 00 00 00 00 00 00 e0 Teredo Tunneling Pseudo-Interface
===========================================================================
IPv4 Route Table
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 192.168.1.1 192.168.1.11 25
127.0.0.0 255.0.0.0 On-link 127.0.0.1 306
127.0.0.1 255.255.255.255 On-link 127.0.0.1 306
127.255.255.255 255.255.255.255 On-link 127.0.0.1 306
192.168.1.0 255.255.255.0 On-link 192.168.1.11 281
192.168.1.11 255.255.255.255 On-link 192.168.1.11 281
192.168.1.255 255.255.255.255 On-link 192.168.1.11 281
224.0.0.0 240.0.0.0 On-link 127.0.0.1 306
224.0.0.0 240.0.0.0 On-link 192.168.1.11 281
255.255.255.255 255.255.255.255 On-link 127.0.0.1 306
255.255.255.255 255.255.255.255 On-link 192.168.1.11 281
===========================================================================
Persistent Routes:
None
192.168.1.1 是我的 WiFi 路由器。然后我以管理员权限启动 OpenVPN GUI 并获得以下内容：
Tue Mar 12 22:01:16 2013 OpenVPN 2.2.2 Win32-MSVC++ [SSL] [LZO2] [PKCS11] built on Dec 15 2011
Tue Mar 12 22:01:16 2013 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.
Tue Mar 12 22:01:16 2013 NOTE: OpenVPN 2.1 requires '--script-security 2' or higher to call user-defined scripts or executables
Tue Mar 12 22:01:16 2013 LZO compression initialized
Tue Mar 12 22:01:16 2013 Control Channel MTU parms [ L:1544 D:140 EF:40 EB:0 ET:0 EL:0 ]
Tue Mar 12 22:01:16 2013 Socket Buffers: R=[8192->8192] S=[8192->8192]
Tue Mar 12 22:01:16 2013 Data Channel MTU parms [ L:1544 D:1450 EF:44 EB:135 ET:0 EL:0 AF:3/1 ]
Tue Mar 12 22:01:16 2013 Local Options hash (VER=V4): '69109d17'
Tue Mar 12 22:01:16 2013 Expected Remote Options hash (VER=V4): 'c0103fa8'
Tue Mar 12 22:01:16 2013 Attempting to establish TCP connection with <server address and port>
Tue Mar 12 22:01:17 2013 TCP connection established with <server address and port>
Tue Mar 12 22:01:17 2013 TCPv4_CLIENT link local: [undef]
Tue Mar 12 22:01:17 2013 TCPv4_CLIENT link remote: <server address and port>
Tue Mar 12 22:01:17 2013 TLS: Initial packet from <server address and port>, sid=c2fbe2fc 7ac9518f
Tue Mar 12 22:01:19 2013 VERIFY OK: depth=1, <key params>
Tue Mar 12 22:01:19 2013 VERIFY OK: depth=0, <key params>
Tue Mar 12 22:01:23 2013 Data Channel Encrypt: Cipher 'BF-CBC' initialized with 128 bit key
Tue Mar 12 22:01:23 2013 Data Channel Encrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
Tue Mar 12 22:01:23 2013 Data Channel Decrypt: Cipher 'BF-CBC' initialized with 128 bit key
Tue Mar 12 22:01:23 2013 Data Channel Decrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
Tue Mar 12 22:01:23 2013 Control Channel: TLSv1, cipher TLSv1/SSLv3 DHE-RSA-AES256-SHA, 2048 bit RSA
Tue Mar 12 22:01:23 2013 [New_dot_server] Peer Connection Initiated with <server address and port>
Tue Mar 12 22:01:25 2013 SENT CONTROL [New_dot_server]: 'PUSH_REQUEST' (status=1)
Tue Mar 12 22:01:26 2013 PUSH: Received control message: 'PUSH_REPLY,route 172.16.0.0 255.255.255.0,topology net30,ping 10,ping-restart 120,ifconfig 172.16.0.22 172.16.0.21'
Tue Mar 12 22:01:26 2013 OPTIONS IMPORT: timers and/or timeouts modified
Tue Mar 12 22:01:26 2013 OPTIONS IMPORT: --ifconfig/up options modified
Tue Mar 12 22:01:26 2013 OPTIONS IMPORT: route options modified
Tue Mar 12 22:01:26 2013 ROUTE default_gateway=192.168.1.1
Tue Mar 12 22:01:26 2013 TAP-WIN32 device [Local Area Connection 2] opened: \\.\Global\{CA1C3986-D7B0-4F47-80BD-8E8C6F671C1D}.tap
Tue Mar 12 22:01:26 2013 TAP-Win32 Driver Version 9.9
Tue Mar 12 22:01:26 2013 TAP-Win32 MTU=1500
Tue Mar 12 22:01:26 2013 Notified TAP-Win32 driver to set a DHCP IP/netmask of 172.16.0.22/255.255.255.252 on interface {CA1C3986-D7B0-4F47-80BD-8E8C6F671C1D} [DHCP-serv: 172.16.0.21, lease-time: 31536000]
Tue Mar 12 22:01:26 2013 Successful ARP Flush on interface [17] {CA1C3986-D7B0-4F47-80BD-8E8C6F671C1D}
此时 WiFi 连接中断，WiFi 适配器在控制面板->网络和共享中心->更改适配器属性中显示为已禁用。在 VPN 日志中显示为：
Tue Mar 12 22:01:27 2013 Connection reset, restarting [-1]
Tue Mar 12 22:01:27 2013 TCP/UDP: Closing socket
Tue Mar 12 22:01:27 2013 SIGUSR1[soft,connection-reset] received, process restarting
Tue Mar 12 22:01:27 2013 Restart pause, 5 second(s)
Tue Mar 12 22:01:32 2013 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.
Tue Mar 12 22:01:32 2013 NOTE: OpenVPN 2.1 requires '--script-security 2' or higher to call user-defined scripts or executables
Tue Mar 12 22:01:32 2013 Re-using SSL/TLS context
Tue Mar 12 22:01:32 2013 LZO compression initialized
Tue Mar 12 22:01:32 2013 Control Channel MTU parms [ L:1544 D:140 EF:40 EB:0 ET:0 EL:0 ]
Tue Mar 12 22:01:32 2013 Socket Buffers: R=[8192->8192] S=[8192->8192]
Tue Mar 12 22:01:32 2013 RESOLVE: Cannot resolve host address: <server domain name>: [NO_DATA] The requested name is valid but does not have an IP address.
Tue Mar 12 22:01:32 2013 Data Channel MTU parms [ L:1544 D:1450 EF:44 EB:135 ET:0 EL:0 AF:3/1 ]
Tue Mar 12 22:01:32 2013 Local Options hash (VER=V4): '69109d17'
Tue Mar 12 22:01:32 2013 Expected Remote Options hash (VER=V4): 'c0103fa8'
Tue Mar 12 22:01:32 2013 RESOLVE: Cannot resolve host address: <server domain name>: [NO_DATA] The requested name is valid but does not have an IP address.
Tue Mar 12 22:01:37 2013 RESOLVE: Cannot resolve host address: <server domain name>: [NO_DATA] The requested name is valid but does not have an IP address.
Tue Mar 12 22:01:42 2013 RESOLVE: Cannot resolve host address: <server domain name>: [NO_DATA] The requested name is valid but does not have an IP address.
...
此时 WiFi 适配器已关闭。路由表：
IPv4 Route Table
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
127.0.0.0 255.0.0.0 On-link 127.0.0.1 306
127.0.0.1 255.255.255.255 On-link 127.0.0.1 306
127.255.255.255 255.255.255.255 On-link 127.0.0.1 306
172.16.0.20 255.255.255.252 On-link 172.16.0.22 286
172.16.0.22 255.255.255.255 On-link 172.16.0.22 286
172.16.0.23 255.255.255.255 On-link 172.16.0.22 286
224.0.0.0 240.0.0.0 On-link 127.0.0.1 306
224.0.0.0 240.0.0.0 On-link 172.16.0.22 286
255.255.255.255 255.255.255.255 On-link 127.0.0.1 306
255.255.255.255 255.255.255.255 On-link 172.16.0.22 286
===========================================================================
Persistent Routes:
None
然后我进入适配器设置并手动启用 WiFi 适配器。VPN 日志中显示如下：
...
Tue Mar 12 22:02:57 2013 RESOLVE: Cannot resolve host address: <server domain name>: [NO_DATA] The requested name is valid but does not have an IP address.
Tue Mar 12 22:03:02 2013 RESOLVE: Cannot resolve host address: <server domain name>: [NO_DATA] The requested name is valid but does not have an IP address.
Tue Mar 12 22:03:07 2013 Attempting to establish TCP connection with <server address and port>
Tue Mar 12 22:03:07 2013 TCP connection established with <server address and port>
Tue Mar 12 22:03:07 2013 TCPv4_CLIENT link local: [undef]
Tue Mar 12 22:03:07 2013 TCPv4_CLIENT link remote: <server address and port>
Tue Mar 12 22:03:07 2013 TLS: Initial packet from <server address and port>, sid=217a2257 11069cf8
Tue Mar 12 22:03:10 2013 VERIFY OK: depth=1, <key details>
Tue Mar 12 22:03:10 2013 VERIFY OK: depth=0, <key details>
Tue Mar 12 22:03:14 2013 Data Channel Encrypt: Cipher 'BF-CBC' initialized with 128 bit key
Tue Mar 12 22:03:14 2013 Data Channel Encrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
Tue Mar 12 22:03:14 2013 Data Channel Decrypt: Cipher 'BF-CBC' initialized with 128 bit key
Tue Mar 12 22:03:14 2013 Data Channel Decrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
Tue Mar 12 22:03:14 2013 Control Channel: TLSv1, cipher TLSv1/SSLv3 DHE-RSA-AES256-SHA, 2048 bit RSA
Tue Mar 12 22:03:14 2013 [New_dot_server] Peer Connection Initiated with <server address and port>
Tue Mar 12 22:03:16 2013 SENT CONTROL [New_dot_server]: 'PUSH_REQUEST' (status=1)
Tue Mar 12 22:03:17 2013 PUSH: Received control message: 'PUSH_REPLY,route 172.16.0.0 255.255.255.0,topology net30,ping 10,ping-restart 120,ifconfig 172.16.0.22 172.16.0.21'
Tue Mar 12 22:03:17 2013 OPTIONS IMPORT: timers and/or timeouts modified
Tue Mar 12 22:03:17 2013 OPTIONS IMPORT: --ifconfig/up options modified
Tue Mar 12 22:03:17 2013 OPTIONS IMPORT: route options modified
Tue Mar 12 22:03:17 2013 Preserving previous TUN/TAP instance: Local Area Connection 2
Tue Mar 12 22:03:17 2013 Initialization Sequence Completed
之后，托盘中的 OpenVPN GUI 图标变为绿色，并出现一个带有 IP 地址的弹出窗口。我的互联网连接正常，但没有 VPN 连接。路由表是
IPv4 Route Table
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 192.168.1.1 192.168.1.11 25
127.0.0.0 255.0.0.0 On-link 127.0.0.1 306
127.0.0.1 255.255.255.255 On-link 127.0.0.1 306
127.255.255.255 255.255.255.255 On-link 127.0.0.1 306
172.16.0.20 255.255.255.252 On-link 172.16.0.22 286
172.16.0.22 255.255.255.255 On-link 172.16.0.22 286
172.16.0.23 255.255.255.255 On-link 172.16.0.22 286
192.168.1.0 255.255.255.0 On-link 192.168.1.11 281
192.168.1.11 255.255.255.255 On-link 192.168.1.11 281
192.168.1.255 255.255.255.255 On-link 192.168.1.11 281
224.0.0.0 240.0.0.0 On-link 127.0.0.1 306
224.0.0.0 240.0.0.0 On-link 172.16.0.22 286
224.0.0.0 240.0.0.0 On-link 192.168.1.11 281
255.255.255.255 255.255.255.255 On-link 127.0.0.1 306
255.255.255.255 255.255.255.255 On-link 172.16.0.22 286
255.255.255.255 255.255.255.255 On-link 192.168.1.11 281
===========================================================================
Persistent Routes:
None
......然后我就在这里用头撞墙，自杀。
更新3
配置文件：
服务器（Ubuntu 服务器）：
# Which local IP address should OpenVPN
# listen on? (optional)
;local a.b.c.d
# Which TCP/UDP port should OpenVPN listen on?
# If you want to run multiple OpenVPN instances
# on the same machine, use a different port
# number for each one. You will need to
# open up this port on your firewall.
port 3307
# TCP or UDP server?
proto tcp
;proto udp
# "dev tun" will create a routed IP tunnel,
# "dev tap" will create an ethernet tunnel.
# Use "dev tap0" if you are ethernet bridging
# and have precreated a tap0 virtual interface
# and bridged it with your ethernet interface.
# If you want to control access policies
# over the VPN, you must create firewall
# rules for the the TUN/TAP interface.
# On non-Windows systems, you can give
# an explicit unit number, such as tun0.
# On Windows, use "dev-node" for this.
# On most systems, the VPN will not function
# unless you partially or fully disable
# the firewall for the TUN/TAP interface.
;dev tap
dev tun
# Windows needs the TAP-Win32 adapter name
# from the Network Connections panel if you
# have more than one. On XP SP2 or higher,
# you may need to selectively disable the
# Windows firewall for the TAP adapter.
# Non-Windows systems usually don't need this.
;dev-node MyTap
# SSL/TLS root certificate (ca), certificate
# (cert), and private key (key). Each client
# and the server must have their own cert and
# key file. The server and all clients will
# use the same ca file.
#
# See the "easy-rsa" directory for a series
# of scripts for generating RSA certificates
# and private keys. Remember to use
# a unique Common Name for the server
# and each of the client certificates.
#
# Any X509 key management system can be used.
# OpenVPN can also use a PKCS #12 formatted key file
# (see "pkcs12" directive in man page).
ca /etc/openvpn/ca.crt
cert /etc/openvpn/server.crt
key /etc/openvpn/server.key # This file should be kept secret
# Diffie hellman parameters.
# Generate your own with:
# openssl dhparam -out dh1024.pem 1024
# Substitute 2048 for 1024 if you are using
# 2048 bit keys.
dh /etc/openvpn/dh2048.pem
# Configure server mode and supply a VPN subnet
# for OpenVPN to draw client addresses from.
# The server will take 10.8.0.1 for itself,
# the rest will be made available to clients.
# Each client will be able to reach the server
# on 10.8.0.1. Comment this line out if you are
# ethernet bridging. See the man page for more info.
server 172.16.0.0 255.255.255.0
# Maintain a record of client <-> virtual IP address
# associations in this file. If OpenVPN goes down or
# is restarted, reconnecting clients can be assigned
# the same virtual IP address from the pool that was
# previously assigned.
ifconfig-pool-persist ipp.txt
# Configure server mode for ethernet bridging.
# You must first use your OS's bridging capability
# to bridge the TAP interface with the ethernet
# NIC interface. Then you must manually set the
# IP/netmask on the bridge interface, here we
# assume 10.8.0.4/255.255.255.0. Finally we
# must set aside an IP range in this subnet
# (start=10.8.0.50 end=10.8.0.100) to allocate
# to connecting clients. Leave this line commented
# out unless you are ethernet bridging.
;server-bridge 10.8.0.4 255.255.255.0 10.8.0.50 10.8.0.100
# Push routes to the client to allow it
# to reach other private subnets behind
# the server. Remember that these
# private subnets will also need
# to know to route the OpenVPN client
# address pool (10.8.0.0/255.255.255.0)
# back to the OpenVPN server.
;push "route 192.168.10.0 255.255.255.0"
;push "route 192.168.20.0 255.255.255.0"
# To assign specific IP addresses to specific
# clients or if a connecting client has a private
# subnet behind it that should also have VPN access,
# use the subdirectory "ccd" for client-specific
# configuration files (see man page for more info).
# EXAMPLE: Suppose the client
# having the certificate common name "Thelonious"
# also has a small subnet behind his connecting
# machine, such as 192.168.40.128/255.255.255.248.
# First, uncomment out these lines:
;client-config-dir ccd
;route 192.168.40.128 255.255.255.248
# Then create a file ccd/Thelonious with this line:
# iroute 192.168.40.128 255.255.255.248
# This will allow Thelonious' private subnet to
# access the VPN. This example will only work
# if you are routing, not bridging, i.e. you are
# using "dev tun" and "server" directives.
# EXAMPLE: Suppose you want to give
# Thelonious a fixed VPN IP address of 10.9.0.1.
# First uncomment out these lines:
;client-config-dir ccd
;route 10.9.0.0 255.255.255.252
# Then add this line to ccd/Thelonious:
# ifconfig-push 10.9.0.1 10.9.0.2
# Suppose that you want to enable different
# firewall access policies for different groups
# of clients. There are two methods:
# (1) Run multiple OpenVPN daemons, one for each
# group, and firewall the TUN/TAP interface
# for each group/daemon appropriately.
# (2) (Advanced) Create a script to dynamically
# modify the firewall in response to access
# from different clients. See man
# page for more info on learn-address script.
;learn-address ./script
# If enabled, this directive will configure
# all clients to redirect their default
# network gateway through the VPN, causing
# all IP traffic such as web browsing and
# and DNS lookups to go through the VPN
# (The OpenVPN server machine may need to NAT
# the TUN/TAP interface to the internet in
# order for this to work properly).
# CAVEAT: May break client's network config if
# client's local DHCP server packets get routed
# through the tunnel. Solution: make sure
# client's local DHCP server is reachable via
# a more specific route than the default route
# of 0.0.0.0/0.0.0.0.
;push "redirect-gateway"
# Certain Windows-specific network settings
# can be pushed to clients, such as DNS
# or WINS server addresses. CAVEAT:
# http://openvpn.net/faq.html#dhcpcaveats
;push "dhcp-option DNS 10.8.0.1"
;push "dhcp-option WINS 10.8.0.1"
# Uncomment this directive to allow different
# clients to be able to "see" each other.
# By default, clients will only see the server.
# To force clients to only see the server, you
# will also need to appropriately firewall the
# server's TUN/TAP interface.
client-to-client
# Uncomment this directive if multiple clients
# might connect with the same certificate/key
# files or common names. This is recommended
# only for testing purposes. For production use,
# each client should have its own certificate/key
# pair.
#
# IF YOU HAVE NOT GENERATED INDIVIDUAL
# CERTIFICATE/KEY PAIRS FOR EACH CLIENT,
# EACH HAVING ITS OWN UNIQUE "COMMON NAME",
# UNCOMMENT THIS LINE OUT.
;duplicate-cn
# The keepalive directive causes ping-like
# messages to be sent back and forth over
# the link so that each side knows when
# the other side has gone down.
# Ping every 10 seconds, assume that remote
# peer is down if no ping received during
# a 120 second time period.
keepalive 10 120
# For extra security beyond that provided
# by SSL/TLS, create an "HMAC firewall"
# to help block DoS attacks and UDP port flooding.
#
# Generate with:
# openvpn --genkey --secret ta.key
#
# The server and each client must have
# a copy of this key.
# The second parameter should be '0'
# on the server and '1' on the clients.
;tls-auth ta.key 0 # This file is secret
# Select a cryptographic cipher.
# This config item must be copied to
# the client config file as well.
;cipher BF-CBC # Blowfish (default)
;cipher AES-128-CBC # AES
;cipher DES-EDE3-CBC # Triple-DES
# Enable compression on the VPN link.
# If you enable it here, you must also
# enable it in the client config file.
comp-lzo
# The maximum number of concurrently connected
# clients we want to allow.
;max-clients 100
# It's a good idea to reduce the OpenVPN
# daemon's privileges after initialization.
#
# You can uncomment this out on
# non-Windows systems.
user nobody
group nogroup
# The persist options will try to avoid
# accessing certain resources on restart
# that may no longer be accessible because
# of the privilege downgrade.
persist-key
persist-tun
# Output a short status file showing
# current connections, truncated
# and rewritten every minute.
status openvpn-status.log
# By default, log messages will go to the syslog (or
# on Windows, if running as a service, they will go to
# the "\Program Files\OpenVPN\log" directory).
# Use log or log-append to override this default.
# "log" will truncate the log file on OpenVPN startup,
# while "log-append" will append to it. Use one
# or the other (but not both).
;log openvpn.log
;log-append openvpn.log
# Set the appropriate level of log
# file verbosity.
#
# 0 is silent, except for fatal errors
# 4 is reasonable for general usage
# 5 and 6 can help to debug connection problems
# 9 is extremely verbose
verb 3
# Silence repeating messages. At most 20
# sequential messages of the same message
# category will be output to the log.
;mute 20
客户：
# Specify that we are a client and that we
# will be pulling certain config file directives
# from the server.
client
# Use the same setting as you are using on
# the server.
# On most systems, the VPN will not function
# unless you partially or fully disable
# the firewall for the TUN/TAP interface.
;dev tap
dev tun
# Windows needs the TAP-Win32 adapter name
# from the Network Connections panel
# if you have more than one. On XP SP2,
# you may need to disable the firewall
# for the TAP adapter.
;dev-node MyTap
# Are we connecting to a TCP or
# UDP server? Use the same setting as
# on the server.
proto tcp
;proto udp
# The hostname/IP and port of the server.
# You can have multiple remote entries
# to load balance between the servers.
remote <server address> 3307
;remote my-server-2 1194
# Choose a random host from the remote
# list for load-balancing. Otherwise
# try hosts in the order specified.
;remote-random
# Keep trying indefinitely to resolve the
# host name of the OpenVPN server. Very useful
# on machines which are not permanently connected
# to the internet such as laptops.
resolv-retry infinite
# Most clients don't need to bind to
# a specific local port number.
nobind
# Downgrade privileges after initialization (non-Windows only)
;user nobody
;group nogroup
# Try to preserve some state across restarts.
persist-key
persist-tun
# If you are connecting through an
# HTTP proxy to reach the actual OpenVPN
# server, put the proxy server/IP and
# port number here. See the man page
# if your proxy server requires
# authentication.
;http-proxy-retry # retry on connection failures
;http-proxy [proxy server] [proxy port #]
# Wireless networks often produce a lot
# of duplicate packets. Set this flag
# to silence duplicate packet warnings.
;mute-replay-warnings
# SSL/TLS parms.
# See the server config file for more
# description. It's best to use
# a separate .crt/.key file pair
# for each client. A single ca
# file can be used for all clients.
ca <ca path>
cert <cert path>
key <key path>
# Verify server certificate by checking
# that the certicate has the nsCertType
# field set to "server". This is an
# important precaution to protect against
# a potential attack discussed here:
# http://openvpn.net/howto.html#mitm
#
# To use this feature, you will need to generate
# your server certificates with the nsCertType
# field set to "server". The build-key-server
# script in the easy-rsa folder will do this.
;ns-cert-type server
# If a tls-auth key is used on the server
# then every client must also have the key.
;tls-auth ta.key 1
# Select a cryptographic cipher.
# If the cipher option is used on the server
# then you must also specify it here.
;cipher x
# Enable compression on the VPN link.
# Don't enable this unless it is also
# enabled in the server config file.
comp-lzo
# Set log file verbosity.
verb 3
# Silence repeating messages
;mute 20
答案1
尝试从控制面板打开网络连接（网络和共享中心>更改适配器设置），转到 VPN 连接适配器，右键单击>属性>网络选项卡>高级>取消勾选“在远程网络上使用默认网关”从 IP 设置选项卡。
尝试看看是否有效。我以前遇到过同样的问题，它帮我解决了这个问题 - 在 x64 Win7 客户端上断开无线连接。
答案2
如果有人通过搜索来到此处，则仅作为记录。
我最近重新安装了 OpenVPN 服务器和所有客户端（还重新生成了所有密钥），问题就解决了。我怀疑这是服务器中某种非常局部和极端情况的错误。
无论如何，问题解决了。
答案3
对于将来通过 Google 搜索来到这里的任何 Win7 用户（可能还有其他操作系统的用户）：进入 services.msc 并“停止”服务“Wireless AutoSwitch”。右键单击它，然后选择“属性”，在“启动类型”下选择“已禁用”。Windows 正在关闭您的 WiFi，因为它认为已插入 LAN。这允许它同时运行多个网络。
答案4
两个系统之间的 .ovpn 文件是否相同？
我不知道这是否能解决您的问题，但我script-security 2 system的 .ovpn 文件中有这个问题。
干杯