Currently I'm running a FreeBSD 9.1 and the default gateway is already configured in the rc.conf
.
rc.conf
:
defaultrouter = "10.0.0.1"
But now I want to change the default gateway without rebooting the system, is this possible?
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Sign up to join this communityroute del default
route add default 1.2.3.4
Where 1.2.3.4
is the new gateway. You can even concatenate them onto the same line with a ;
Edit: This is FreeBSD, not Linux. The command is different. Please do not edit this Answer if you haven't read the Question carefully enough to determine the operating system being used.
;
or with &&
Jul 8, 2014 at 14:58
ip route del default
and ip route add default via 1.2.3.4
work. So the command is still relevant for Linux users too as it has quite a bit of resemblance.
Jan 17, 2017 at 17:26
You can add a new default route and remove the old one using either the ip
or route
command. The commands below will replace the gateway with 192.0.2.1. Both command pairs do the same thing. FreeBSD and other OSs should have one or both programs, possibly with slightly different formats. (FreeBSD has the route
command and excludes the gw
keyword used in other implementations.) The commands man ip
and/or man route
should provide you with documentation on your specific implementation.
route add default 192.0.2.1
route del default 10.0.0.1
ip route add default via 192.0.2.1
ip route del default via 10.0.0.1
There are multiple implementations of these commands, so the above may not match your implementation. Your implementation should have a man
page with examples for common use cases such as adding and removing default gateways. Try man route
and man ip
to see how your implementation works.
Change 192.0.2.1 to your desired default gateway. The default gateway needs to be on one of networks you have a direct connection to. You can change your IP address in a similar manner. ip
is a newer tool which will do most everything you need to do to view and manage IP addresses and routing on IPv4 and IPv6 networks. ifconfig
is an an older tool for configuring IP addresses on an IPv4 network.
To make the change permanent, update your network configuration files in /etc
. The file(s) vary depending on the distribution you are using.
At least one of these commands should be available on any Unix derived O/S. Different versions may work slightly differently. Check the man
page for details on your O/S.
route
has multiple implementations with minor syntax changes.
(EDIT: this may be useful if you're on Linux, but the OP asked about FreeBSD)
Here's a one-liner:
ip route replace default via 1.2.3.4
Where 1.2.3.4
is the new gateway IP
yes just change the route and restart your network.
/etc/rc.d/netif restart
You could try:
route add default gw 192.168.1.254 eth0
Route add
is part of my FreeBSD 8.4 install though. But yeah, many people here who answer for the wrong OS.
route add
part works fine. GNU/Linux added the gw
part, which doesn't work on any other *nix. Without the gw
works on all the BSDs, Solaris, OSX, HPUX, AIX, etc.
It's very easy, you only need to type the next commands:
$ route del 0/0
$ route add 0/0 192.168.0.1
You gonna need to replace the '192.168.0.1' with the IP of your choice.
And to check the changes you can use 'netstat':
$ netstat -r
This command show the routing table of the system.
Always first use netstat -nr
to check the gateway what you have and what the details it has...you See 0.0.0.0
. when its a default one and you should first think that why am I changing this gateway than use this command:
route add default gw your ip eth0