Server :: OpenVPN: Can't Change Default "route"

Apr 18, 2011

I have OpenVPN working well, but I can't figure out how to change the default route. By default, a "route" shows me: * UH 0 0 0 tun0 But I want it to read: UG 0 0 0 tun0 ... so I can access other computers on the network. I can accomplish this manually by running: ip route add via dev tun0 proto static How can I get this to be the default route? I've tried adding push "route" to my /etc/openvpn/openvpn.conf on the VPN server but that has not helped.

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Server :: OpenVPN Range Address / When Change Static IP To Dynamic IP In Config File OpenVPN Didn't Work?

Feb 13, 2010

I want to configure a VPN over the Internet.I installed the 'openvpn' package, generated the key file, transfered it by a secure way to the client, and setted up the configuration file.

So, in that configuration file I input the IP addresses of the tunneled interfaces. Both IPs are static in the tunnel.

Then, I've heard somewhere that I can assign a dynamic configuration IP for the client. I do this registering a range.

Well, when I tried to change static IP to dynamic IP (changing '' to '') in the configuration file, the OpenVPN didn't work.

Obviously I don't know what I'm doing, and I really, don't believe that simply changing the IP will make it work, but I tried.

I hope I explained my problem as well.

My configuration file:

# OpenVPN Server Configuration File
dev tun 0
cd /etc/openvpn
secret key_file

In client I execute the 'openvpn' without the '--daemon' parameter.Then I want that my client uses a IP in a range (, for example), instead of a static IP ( also thought to use a DHCP server, but I'm not sure that will work.

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Networking :: Set A Route For Eth1 - DHCP Clients - To Reach Tun0 - Openvpn Server - CentOS

Sep 21, 2010

I have openvpn tunnel setup between two CentOS servers. One of the CentOS servers also acts as a DHCP server for some client computers.

Server A= OpenVPN server
Server B= OpenVPN client (connects to Server A with OpenVPN)

The two CentOS servers can ping each other ( via the tun0.

However, client computer connected to Server B (DHCP server) can't reach (which is the OpenVPN server).

I think I am missing some routing in my "ip route show". Following is the full picture:

What command can I issue to get this fixed? something along ip route add?

There is no firewall service on both end. service iptables stop! I can't bridge eth1 and tun0 as DHCP server might mess up the other side. I can't do a push of "redirect-gateway def1" because then clients loose their IP as they send DHCP requests to Server A.

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Software :: OpenVPN Address Pool - Know To Route

Aug 3, 2010

I have a question regarding OpenVPN. I have configured my own vpn server. It is in a private network The ip addresses I am using for the vpn connection are in the network but I want to connect my ovpn clinets to the network. I read the manuals and I think the "push route" command will work for me, but I cannot understand fully the description of the command "push route".

# 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 ( back to the OpenVPN server.
;push "route"
;push "route"

So the questions:
1. These private subnets behind the server are routed from my vpn server or from another router
2. How these private subnets "know to route" the open vpn address pool, is this a configuration of the router for this networks ( ?

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Red Hat / Fedora :: How To Add Default Route

Feb 1, 2010

I'm trying to move away from using /etc/rc.local for adding routes I've added

to /etc/sysconfig/network/network-scripts/route-eth0 after doing 'service network restart' I'm do see the new route as described by directive above. However, I still do not see the default gateway that's supposed to be on my box. Where/how do I define the default gateway using the route-ethX method above?

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OpenSUSE Network :: Verizon 3G - No Default Route Being Set?

Dec 5, 2009

I've been seeing a bunch of issues with the /etc/resolv.conf not picking up the nameservers for 3g connections, and managed to fix that issue using tips found here.. the one thing I m having a problwm with is my 3G USB modem not picking up a default route/gateway. I can connect using KNetworkManager, get an IP and nameservers, but.


And to top it all off, I cannot figure out what the default gateway should be from verizon to just write a script out myself that'll do it automatically.

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May 11, 2009

I would like, from a C program, find the hardware MAC address of the default route path. With BASH I can do a 'route' find 'default and then an ifconfig and grep for 'HWaddr'. Are there C calls to do the same??

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Fedora Networking :: Prevent Second I/f From Taking Over Default Route?

Jul 6, 2009

I have the following network/server configuration:


How do I prevent eth1 from being able to overwrite the default gateway that eth0 has already set?!? I read that one can create route-* files in the /etc/sysconfig/network-scripts/ directory to setup static default routes.But those seems to require one to know the IP address of the gateway, but in my case the ISP's gateway is served via DHCP and so it could vary from day to day. Here are the contents of some of the relevant files:


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OpenSUSE Network :: How To Avoid Typing Route Add Default GW

Jan 14, 2010

I have a static ip on my wired (eth0) connection. I thought I had it well set up in yast. In the routing section I do have my default gw coming up there, with the the right nw i/f (eth0) associate with it. However, when I boot up, y config seems to ignore that fact, and I have to keep goign to root and typing "route add default gw <mygwip>" each time, which is something I want to avoid. Isn't it odd that the route settings created by yast have no effect? If they did, the route would be set up on bootup and I would haven't to do that typing.

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OpenSUSE Network :: NetworkManager Deletes Default Route

Jul 11, 2010

I'm currently struggling with the following problem: Connecting to a wired network with NetworkManager (0.7.1) is no problem at all: Everything is set up automatically, including the default route:


When I now add the route manually it works. But as soon as the cable is plugged in, the NetworkManager overwrites the routing table entry again (which makes it quite annoying). Does anyone know a way to avoid this behaviour?

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Ubuntu Networking :: Default Route Stops Working?

Mar 22, 2011

I'm currently working with Ubuntu 10.10.I wanted to add a default route to a gateway named ppp0.I did it with the command> route add default ppp0It works ok. But then from time to time it suddenly stops and I have to go back again to the server and retype the command. I'm clueless as to why is it happening. I can assure no one is working at the server or doing anything over there.Does anyone know causes that might be triggering route default to stop working?Btw where is the best place to add this command so it will be executed automatically on start-up and without needing to login to the server?

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Networking :: Host A Service On Eth0 While Default Route Is A VPN?

Aug 21, 2010

I am attempting to run apache on my linux router while connected to a VPN. My default route is set to the VPN endpoint and I cannot control port forwarding at that end. I cannot seem to connect to any service that i bind to the eth0 interface. I believe that my iptables rules and OpenVPN are the source of the problem.

/sbin/iptables -t nat -A POSTROUTING -o tun1 -j MASQUERADE
/sbin/iptables -A FORWARD -i tun1 -o eth1 -m state --state RELATED,ESTABLISHED -j ACCEPT
/sbin/iptables -A FORWARD -i eth1 -o tun1 -j ACCEPT

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Jan 12, 2011

I'm trying to set up load balancing using iproute2 following this guide. I've got 4 dsl links as follows:

eth1 -
eth2 -
eth3 -
eth0 - (main uncapped line)

eth0 is the default route, and eth3 is being used for something else. So what I want to do is load balance browsing between eth1 and eth2. I've added all of the routes in the LARTC guide, but the command to enable the load balancing:


ip route add default scope global nexthop via $P1 dev $IF1 weight 1 nexthop via $P2 dev $IF2 weight 1 obviously involves creating a new default route. Since I'll be using Squid to push the traffic through the relevant line, how can I set up a load-balanced link for eth1 and eth2 without changing the existing default route on the server?

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Apr 9, 2010

i have created a wordpress user with a symbolic link from his home (/home/wordpress) to /usr/share/wordpress but when wordpress ftps to wordpress home dir it does not follow the sym-link. is there a way to set default ftp dir for the wordpress user to /usr/share/wordpress rather than /home/wordpress?

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Jun 2, 2011

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Feb 9, 2010

I want to change my ssh port from the default 22 to something else. I did the following: vi /etc/ssh/sshd_config; uncommented Port 22 and changed it to the desired port number. After that I run service sshd restart for the change to take an effect. Now, when I want to login into the new port I receive this message - Network error:Unable to route to host. When I change the port back to 22, I will be able to login again.

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Fedora Networking :: Two Network Interfaces - Setup Default Gw Route?

Mar 26, 2009

So I have two network Interfaces

eth0 - NAT behind a router
eth1 - Public IP

When ever I restart the machine, both interfaces pull a IP, but the it randomly chooses eth0 or eth1 to have the gateway. I want the gateway to be eth0 always.


Is there some file or setting I can modify in Fedora10 that will always choose on eth0 as the default gateway?

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Ubuntu Networking :: Nothing Appears In Logfile That Even Mentions Default Route

Feb 28, 2010

In an attempt to get something that, well, you know, just works... I migrated a laptop to Karmic server today. Which works fine, except for one thing: when I use wvdial and a Huawei E160g USB modem to connect to the Internet (which is the only option out here in the sticks where I live) no default gateway is set. When I add one manually everything is fine, except that the default gateway keeps disappearing after a while (at irregular intervals, as far as I can see). Nothing appears in any logfile that even mentions the default route, let alone a reason for its magical vanishing trick. My wvdial.conf is fairly pedestrian:


What's going on here? I'm stumped. And the mighty Googlebrain doesn't seem to know, either. How do I get wvdial & friends to set the correct default route upon connecting? Given the fact that without a default route a PPP connection to a remote network is little use, I would expect this to be a standard feature and not something that I'd have to script a work-around for myself. But then, I have been wrong before. Secondly, and more importantly, why does my default route keep disappearing without a trace?

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May 4, 2010

I have a home server running Lucid which basically runs our home lan, but I also wanted to be able to run transmission-daemon over an ipredator VPN connection completely independently of the ethernet port (as far as the application layer is concerned anyway). Most of the howtos for setting up VPN use the VPN as the default route, however I still wanted to run a webserver, dnsmasq etc, not to mention free bandwidth access to my ISP etc.

Thus, this howto. The ppp connection still tunnels through eth0, but as far everthing else is concerned my server has two independent network ports eth0 and ppp0 and applications use the default route via eth0 to our router unless explicitely directed down pppX. I assume that you already have transmission-daemon installed.


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May 24, 2010

I ask your help to diagnose a problem. For business reasons I use a broadband internet connection via a mobile phone's connected via bluetooth [rfcomm]. Speed is not the maximum but it is more than sufficient for my work. For configuration of ppp I followed this guide Pon pulls up dialup, but I can't navigate also if resolv.conf and default route are correct. In addition I would like to use the NetworkManager that by default, does not see the device. I worked around the problem this way:

I modified the / etc / rc.local so that launch at boot time: # Rfcomm bind yes

After starting Lucid Lynx, bluetooth connects to the phone but NetworkManager does not see the modem.
When I run the connection manually, by: # Pon BluetoothDialup

NetworkManager sees the device, but can not use it because obviously it is locked by the ppp daemon.
So I close the connection with: # poff

Now NetworkManager sees the broadband modem via / dev/rfcomm0, dialup is performed properly. I can finally surf and just enable vpn with NetworkManager. all start automatically at boot, without the need to manually connect and disconnects the dialup to use, finally, the NetworkManager.

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Ubuntu Servers :: Open Vpn Not Pushing Default Route/gateway?

Jun 25, 2010

i have setup an open vpn server and when i connect to it the client pulls an IP and but not default gateway. My goal is to route all web traffic through the VPN... My config file looks like this...


dev tun
proto tcp
port 1194
ca /etc/openvpn/easy-rsa/keys/ca.crt


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Aug 1, 2010

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Feb 3, 2011

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Jul 1, 2011

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Aug 18, 2010

In 11.3, if in "/etc/sysconfig/network/ifcfg-eth0" i set DHCLIENT_SET_DEFAULT_ROUTE="no" this seems to have no effect. If i start my box, the routing table has the "default route"-entry offered by a remote DHCP-Server. More Info: My Susebox has eth0 and eth1 and both network devices should use DHCP4. But from DHCP-offer on eth0 i want to use

* "offered IP-Adress for eth0"
* "offered NTP-Server"
* "offered Host-Name"

From DHCP-offer on the eth1 i want to use

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Nov 15, 2009

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I added them manually and tried again. Still no luck, so I started pinging my router, which worked, tried again pinging Google using one of there IP addresses, which failed. So I ran route to find out which routes where being used, this one gave an unexpected result, because it only showed the route to the local network (I'm not sure about the loopback one, because this was also a lot of times missing when testing):


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May 5, 2010

I have been encountering this problem, not only on 10.4, but on older versions too: I use a wifi router to connect my laptop to the Internet, but sometimes I need to connect directly to another computer to move some files over GLAN. But Ubuntu's Network manager doesn't allow me to configure the eth0 interface without specifying a gateway (no gateway = grey submit button), but when a gateway is specified, it always rewrites the default gw specified already by the active wifi connection and returns back after unplugging the eth cable.

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Apr 22, 2009

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Aug 9, 2010

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