Combine two ethernets?

Luka Renko (Lure) lure at ubuntu.com
Sun Aug 27 16:09:31 BST 2006


On Sunday 27 August 2006 16:28, Thomas Folz-Donahue wrote:
> Any laptop user with wireless capabilities has two network interfaces.
>  What's more, the wired interface is almost always faster than the
> wireless interface.  It would be good to gracefully switch to the
> wired interface when a laptop is plugged in.

This is done (not perfect, but good enough) by network-manager.

> My wireless router gives my wired interface and my wireless interface
> IP addresses from the same subnet.  When the wired interface is
> disconnected, Ubuntu does not detect this and start using the wireless
> interface for all new connections.  This is because (i think, maybe
> i'm talking out of my ass here) the arp table has 192.168.1.1 (that's
> the router) listed as connected to the wired interface.  In order to
> use my wireless connection, I need to disable the wired interface
> (e.g. sudo ifconfig eth0 down).
>
> This is pathetic.  Ubuntu needs better laptop support.

Since your router gives you DHCP address, you can use network-manager. Install 
network-manager-gnome (Ubuntu) or knetworkmanager (Kubuntu) and if your 
wireless card is supported, you should be fine.

> > b) we could specify which program uses what interfaces. For example, use
> > bittorrent in eth0 and web browsers in eth1....
>
> It would be nice if every long-term connection used wireless, because
> the wired connection will drop randomly as people move around their
> houses.

network-manager switches connections, so it will not utilize both.

Regards,
Luka



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