Arch Linux

phnom

Member

Registered: 2017-03-17

Posts: 3

Automatic routing of network interfaces

Hi,

TL;DR; How do I configure Linux network routing to act like Windows network routing?

I have a new work laptop with an arch installation and some VMs for windows stuff. At work I switch networks often and are connected via both the wired (to connect to PLCs, robots and other peripherals. A lot of different subnets.) and the wireless and/or 3G modem (mostly for internet access, but not always.). I have noticed that whenever I use the wired ethernet I lose the internet connection.
I assume it's still there, but the web browser doesn't seem to think so, my assumption is that everything is routed via the wired instead. Are there any configuration files I can poke around in to make the routing behave nicely and automagical?

I just want to be able to use all interfaces simultaneously, preferably without having to do anything but plug the stuff in and maybe change the IP-address of an interface.

Slithery

Administrator

From: Norfolk, UK

Registered: 2013-12-01

Posts: 5,776

Re: Automatic routing of network interfaces

How are you configuring you networks?

It can be done but we need to know what you are using for managing the network under Arch.

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No, it didn't "fix" anything. It just shifted the brokeness one space to the right. - jasonwryan
Closing -- for deletion; Banning -- for muppetry. - jasonwryan

aur - dotfiles

phnom

Member

Registered: 2017-03-17

Posts: 3

Re: Automatic routing of network interfaces

Currently using network manager, but I am open to changing that if I need to.

brebs

Member

Registered: 2007-04-03

Posts: 3,742

Re: Automatic routing of network interfaces

I have noticed that whenever I use the wired ethernet I lose the internet connection

More detail required. It's standard for networking to (attempt to) choose the fastest path - see also metric term.

Sounds like your routing table needs adjustment. "ip route" will show useful debugging info.

phnom

Member

Registered: 2017-03-17

Posts: 3

Re: Automatic routing of network interfaces

Yeah, I guessed as much. I will post an example table as soon as I get back to work and the problem appears.

rsmarples

Member

Registered: 2009-05-12

Posts: 287

Re: Automatic routing of network interfaces

dhcpcd can do this as well as network manager and is included in the base system.
dhcpcd-ui in AUR provides a system tray icon for GTK+ and Qt frameworks.