linux route

how can i make the default gatewat to be the localloopback?
thanks.

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(E-Mail Removed) wrote:
> how can i make the default gatewat to be the localloopback?

You might want to read the instructions on the route(8) command; see
"man 8 route" for details.

To answer your question, enter the following command as root
route add default gw 127.0.0.1

Of course, you realize that this will totally bork network access to any
IP address that doesn't have an explicit route, don't you?


- --

Lew Pitcher, IT Specialist, Corporate Technology Solutions,
Enterprise Technology Solutions, TD Bank Financial Group

(Opinions expressed here are my own, not my employer's)
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(E-Mail Removed) writes:

>how can i make the default gatewat to be the localloopback?

Why would you want that? since your machine has no idea how to forward the
packet, why would you send it to the local machine?

Unruh wrote:
> (E-Mail Removed) writes:
>
> >how can i make the default gatewat to be the localloopback?
>
> Why would you want that? since your machine has no idea how to forward the
> packet, why would you send it to the local machine?

i am writing a server that listens to packets on the lo.
i have other route rule for traffic to go out of the machine.

On 14 Jun 2006 07:25:06 -0700, (E-Mail Removed)
<(E-Mail Removed)> wrote:
>
> Unruh wrote:
>> (E-Mail Removed) writes:
>>
>> >how can i make the default gatewat to be the localloopback?
>>
>> Why would you want that? since your machine has no idea how to forward the
>> packet, why would you send it to the local machine?
>
> i am writing a server that listens to packets on the lo.
> i have other route rule for traffic to go out of the machine.
>
If you want to allow outgoing traffic only to those specific routes, you
don't need a default gateway.


--
Send some filthy mail.

On 14 Jun 2006, in the Usenet newsgroup comp.os.linux.networking, in article
<(E-Mail Removed) .com>, (E-Mail Removed) wrote:

>Unruh wrote:

>> (E-Mail Removed) writes:

>>> how can i make the default gatewat to be the localloopback?

>> Why would you want that?

>i am writing a server that listens to packets on the lo.

Packets that arrive on the lo interface will have one of two types of IP
address for both source and destination - either 127.0.0.0 through
127.255.255.255 (the "localhost" network) or the IP address of one of the
real interfaces of "this" computer. To _reply_ to these packets, the kernel
knows to use the loopback interface.

>i have other route rule for traffic to go out of the machine.

That's great, but the local IP address, or localhost is not reachable
by going outside of the computer. Try this - enter the commands

/sbin/ifconfig -a
ping -c 10 IP.ADD.RE.SS <-- try 127.0.0.1 AND the address of eth0
/sbin/ifconfig -a

Now look at the 'TX packets' and 'RX packets' counts - and note that the
packets used the loopback interface, even if you tried to ping the address
of the Ethernet interface. Why? Because the kernel knows the IP address
translates to itself, and when talking to yourself there is not need to
clutter up the wires with needless noise.

Old guy