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using wget on selected network interfaces

 
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# 1  
Old 04-08-2010
Question using wget on selected network interfaces
Hi there,

I have a Linux Debian server with 2 network cards each connected through a different gateway :
Code:
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
        address 192.168.1.224
        netmask 255.255.255.0
        gateway 192.168.1.1
auto eth1
iface eth1 inet static
        address 192.168.1.225
        netmask 255.255.255.0
        gateway 192.168.1.2

I would like to use wget with the ability to select which interface to use.
Is it possible?
How can I achieve that?

Thanks for your help
Santiago
# 2  
Old 04-08-2010
Quote:
Originally Posted by chebarbudo
I would like to use wget with the ability to select which interface to use.
Is it possible?
How can I achieve that?
Depending on how you're using wget, you can use the routing table to send traffic through the right interface (assuming different destinations for those wgets).

js.
# 3  
Old 04-08-2010
Haven't done it myself, but look into '--bind-address=ADDRESS' option
# 4  
Old 04-08-2010
Interface: no
Address: yes. According to the man page for wget you'd use the --bind-address option.
# 5  
Old 04-09-2010
I stupidely lost the connection to my server by using ipconfig on eth0 instead of eth1.
Anyway, the server is in my office, I will reset it tomorrow.

So as I said...
eth0 is 192.168.1.224 with gateway 192.168.1.1 (it's a livebox with wan 79.15.24.51)
eth1 is 192.168.1.225 with gateway 192.168.1.2 (it's a neufbox with wan 77.240.25.38)

My goal is to be able to tell each gateway's wan address using Current IP Check
So according to what you say (and I will check that tomorrow), the following commands should give me what I expect :
Code:
wget -qO- http://checkip.dyndns.com/ --bind-address 192.168.1.224
wget -qO- http://checkip.dyndns.com/ --bind-address 192.168.1.225

I'll come back to you with an answer tomorrow morning (9:00 Paris / 8:00 London).

Thanks for your advice
Santiago

---------- Post updated at 08:58 ---------- Previous update was at 01:10 ----------

Sorry guys,

I get exactly the same result regardless of the bind address I'm using :
Code:
$ wget -qO- http://checkip.dyndns.com/ --bind-address 192.168.1.224
<html><head><title>Current IP Check</title></head><body>Current IP Address: 79.15.24.51</body></html>
$ wget -qO- http://checkip.dyndns.com/ --bind-address 192.168.1.225
<html><head><title>Current IP Check</title></head><body>Current IP Address: 79.15.24.51</body></html>

Do you have an explanation? an alternate solution?

Thx for your help
Santiago
# 6  
Old 04-09-2010
Just checked: curl has an --interface option, which has it bind to an specific interface. Can't guarantee it will work, tho, since it might be possible that your routing table sends out everything on the same interface regardless of this.
 
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