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How can I disable eth0 and only use eth1?
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ianw1974
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Joined: 18 Oct 2006
Posts: 377
Location: UK and Poland

PostPosted: Thu Nov 08, 2007 7:06 am    Post subject: How can I disable eth0 and only use eth1? Reply with quote

Having a problem on my laptop.

Each time it starts, both interfaces come up, eth0 is wired lan, eth1 is my wireless. I only want to use wireless, but eth0 comes up every time, regardless if I want it to.

Originally, I had it on the startup list, so I removed with:

Code:
rc-update del net.eth0


so it doesn't exist in any runlevels. However, udev always starts it instead. I can't blacklist the module, because my kernel is monolithic. Is there any way I can stop it coming up without editing udev rules? Something nice and simple would be great.

The reason I want to stop it is one of two reasons:

1. If I don't put any config for it, it tries to use DHCP but means my machine takes longer to boot trying to seek an address from a port with no lan connection.
2. If I have a static ip, then ntp-client fails to start, because it tries the first connection (eth0) first before trying the next connection (eth1).

What I'm having to do is stop eth0 manually, and then start ntp-client manually. I'd rather this was automatic, and I think should be possible.
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dev_zero
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Joined: 01 Nov 2007
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PostPosted: Thu Nov 08, 2007 7:14 am    Post subject: Reply with quote

edit: Ok beginning to get a little tired, misunderstood your problem completely

I'm having my system set up almos like you, it should work unless you are doing something funny in the wireless config, like bringing up both interfaces or something.
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ianw1974
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Location: UK and Poland

PostPosted: Thu Nov 08, 2007 7:29 am    Post subject: Reply with quote

Here's my /etc/conf.d/net file. There's nothing weird on the config, however, I need to find a way to stop eth0 coming up.

Code:
config_eth0=( "10.1.1.7/24" )
routes_eth0=( "default gw 10.1.1.1" )

modules=( "wpa_supplicant" )
wpa_supplicant_eth1="-Dwext"
config_eth1=( "dhcpcd" )


if I place # in front of the config_eth0 lines, then it tries to use dhcp by default. So, I don't know what else I need to do to stop it.
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mark_alec
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Joined: 11 Sep 2004
Posts: 6066
Location: Melbourne, Australia

PostPosted: Thu Nov 08, 2007 7:38 am    Post subject: Reply with quote

Moved from Networking & Security to Duplicate Threads.

See https://forums.gentoo.org/viewtopic-t-602909.html
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