How to prevent net.eth0/wlan0 to start?

Message

Ray ishido · Post by **Ray ishido** » Sun Nov 29, 2009 7:14 pm

Hello,

surely a noob question but I don't find the answer:
Net.eth0 and net.wlan0 start at boot, but they are not programmed to start:

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raoul ray # rc-update show          
                  lvm | boot                                          
                  xdm |      default                                  
                 fsck | boot                                          
                 hald |      default                                  
                 mtab | boot                                          
                 root | boot                                          
                 swap | boot                                          
                 udev |                                 sysinit       
              keymaps | boot                                          
                devfs |                                 sysinit       
                dmesg |                                 sysinit       
                local |      default          nonetwork               
            savecache |              shutdown                         
       NetworkManager |      default                                  
           localmount | boot                                          
          consolefont | boot                                          
             firewall |      default                                  
               dhcdbd |      default                                  
              modules | boot                                          
             hostname | boot                                          
             mount-ro |              shutdown                         
               net.lo | boot                                          
               procfs | boot                                          
             netmount |      default                                  
               sysctl | boot                                          
              urandom | boot                                          
         termencoding | boot                                          
       udev-postmount |      default                                  
              hwclock | boot                                          
             bootmisc | boot                                          
        device-mapper | boot                                          
            alsasound |      default                                  
            killprocs |              shutdown

so, How do I prevent them from starting?

erik258 · Post by **erik258** » Sun Nov 29, 2009 8:58 pm

Hello,

your network interfaces are being automatically started by, um, either hotplug or coldplug. See /etc/conf.d/rc to modify which services are started automatically. Take a look at lines 39-46 in particular. They describe how to add entries in RC_PLUG_SERVICES so that particular network interfaces don't automatically start.

For your purposes something like this should do the job:

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RC_PLUG_SERVICES="!net.*"

Incidentally you may also want to look at lines 48-61. Setting

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RC_STRICT_CHECKING="lo"

will make your computer consider networking up (a requirement for rc services like sshd and nfsmount) if the local loopback device is up (which it pretty much always is). This allows you to shift between networks at will without stopping and restarting services that depend on networking, and is pretty much essential for laptops or other devices that move around a lot.

Ray ishido · Post by **Ray ishido** » Mon Nov 30, 2009 1:36 am

Hi,

thank you for your answer.
It didn't solve the pb. here is my /etc/conf.d/rc (only the lines that are not commented)

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RC_TTY_NUMBER=11
RC_PARALLEL_STARTUP="no"
RC_INTERACTIVE="yes"
RC_HOTPLUG="yes"
RC_COLDPLUG="yes"
[b]RC_PLUG_SERVICES="!net.*"[/b]
[b]RC_NET_STRICT_CHECKING="lo"[/b]
RC_DOWN_INTERFACE="yes"
RC_VOLUME_ORDER="raid evms lvm dm"
RC_VERBOSE="no"
RC_BOOTLOG="no"
RC_BOOTCHART="no"
RC_USE_FSTAB="no"
RC_USE_CONFIG_PROFILE="yes"
RC_FORCE_AUTO="no"
RC_DEVICES="auto"
RC_DEVICE_TARBALL="no"
RC_DMESG_LEVEL="1"
RC_RETRY_KILL="yes"
RC_RETRY_TIMEOUT=1
RC_RETRY_COUNT=5
RC_FAIL_ON_ZOMBIE="no"
RC_KILL_CHILDREN="no"
RC_WAIT_ON_START="0.1"
svcdir="/var/lib/init.d"
svcmount="no"
svcfstype="tmpfs"
svcsize=2048

I really don't understand why the system bring up eth0 and wlan0 on boot.

kmare · Post by **kmare** » Mon Nov 30, 2009 9:11 pm

you have

[ b ]RC_PLUG_SERVICES="!net.*"[ /b ]
[ b ]RC_NET_STRICT_CHECKING="lo"[ /b ]

in your file.. you should remove the [ b ] and [ /b ] .

Ray ishido · Post by **Ray ishido** » Tue Dec 01, 2009 1:05 pm

hi,

No, in the file [ b ] and [ /b ] are not present. I wanted to underline those lines in my post but didn't notice it didn't function.

VinzC · Post by **VinzC** » Tue Dec 01, 2009 4:10 pm

Ray ishido wrote:hi,

No, in the file [ b ] and [ /b ] are not present. I wanted to underline those lines in my post but didn't notice it didn't function.

Highlighting doesn't work within a

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 block. Use [quote] instead.

erik258 · Post by **erik258** » Sun Dec 06, 2009 12:21 am

phpBB formatting aside, that seems right to me. Do you have any net.* devices in your rc-scripts? Boot and default shouldn't contain them

luispa · Post by **luispa** » Sun Dec 06, 2009 7:54 am

Not sure, but just in case, there are several "need net" in the other init.d scripts.
will them launch the net.* ?

Luis

VinzC · Post by **VinzC** » Sun Dec 06, 2009 10:31 am

RC_TTY_NUMBER=11
RC_PARALLEL_STARTUP="no"
RC_INTERACTIVE="yes"
RC_HOTPLUG="yes"
RC_COLDPLUG="yes"
RC_PLUG_SERVICES="!net.*"
RC_NET_STRICT_CHECKING="lo"
RC_DOWN_INTERFACE="yes"
RC_VOLUME_ORDER="raid evms lvm dm"
RC_VERBOSE="no"
RC_BOOTLOG="no"
RC_BOOTCHART="no"
RC_USE_FSTAB="no"
RC_USE_CONFIG_PROFILE="yes"
RC_FORCE_AUTO="no"
RC_DEVICES="auto"
RC_DEVICE_TARBALL="no"
RC_DMESG_LEVEL="1"
RC_RETRY_KILL="yes"
RC_RETRY_TIMEOUT=1
RC_RETRY_COUNT=5
RC_FAIL_ON_ZOMBIE="no"
RC_KILL_CHILDREN="no"
RC_WAIT_ON_START="0.1"
svcdir="/var/lib/init.d"
svcmount="no"
svcfstype="tmpfs"
svcsize=2048

Ray ishido wrote:I really don't understand why the system bring up eth0 and wlan0 on boot.

Udev triggers network scripts as soon as it's activated -- see boot messages before any other services. As a quick check, unset RC_PLUG_SERVICES and see what happens.

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raoul ray # rc-update show          
...

       NetworkManager |      default                                  
...
             netmount |      default                                  
...

BTW Isn't NetworkManager supposed to start these network devices?

WastingBody · Post by **WastingBody** » Sun Dec 06, 2009 7:07 pm

NetworkManager will start those devices on their own. Put this in your "/etc/conf.d/local.start"; it will disable NetworkManager from starting the wireless interface until you want to start it with the applet.

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dbus-send --system --type=method_call --dest=org.freedesktop.NetworkManager \
	/org/freedesktop/NetworkManager org.freedesktop.DBus.Properties.Set \
	string:org.freedesktop.NetworkManager string:WirelessEnabled \
	variant:boolean:false

VinzC · Post by **VinzC** » Sun Dec 06, 2009 9:45 pm

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dbus-send --system --type=method_call --dest=org.freedesktop.NetworkManager \
	/org/freedesktop/NetworkManager org.freedesktop.DBus.Properties.Set \
	string:org.freedesktop.NetworkManager string:WirelessEnabled \
	variant:boolean:false

WastingBody wrote:NetworkManager will start those devices on their own. Put this in your "/etc/conf.d/local.start"; it will disable NetworkManager from starting the wireless interface until you want to start it with the applet.

Wow! Looks like some people are making GNU desktop et al. as complex and non-obvious to manage as Window$...

WastingBody · Post by **WastingBody** » Sun Dec 06, 2009 11:14 pm

It would be nice to have one of those nifty little check boxes that could disable networking by default.

joeklow · Post by **joeklow** » Thu Mar 24, 2011 12:43 am

WastingBody wrote:NetworkManager will start those devices on their own. Put this in your "/etc/conf.d/local.start"; it will disable NetworkManager from starting the wireless interface until you want to start it with the applet.
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dbus-send --system --type=method_call --dest=org.freedesktop.NetworkManager \
	/org/freedesktop/NetworkManager org.freedesktop.DBus.Properties.Set \
	string:org.freedesktop.NetworkManager string:WirelessEnabled \
	variant:boolean:false

Any way to include this functionality into NetworkManager init.d script (without modifying it)?
I have some weird problems with NM/DBUS/ACPI/ath9k device working together, e.g. unpredicable shutdowns (cant power on until AC power cut for seconds)

VinzC wrote: Wow! Looks like some people are making GNU desktop et al. as complex and non-obvious to manage as Window$...

Unobvious hacks are for features, that are normally unexpected even at developer station and network's geek laptop, right?

However, that Ubuntish NM really drives me crazy.

divago · Post by **divago** » Thu Mar 24, 2011 9:42 am

hi, i got same problem here
(net.eth0 and net.wlan0 still start even if i rc-update deleted it, and NetworkManager/wicd does'nt start)

btw someone adviced me to just delete /etc/init.d/net.eth0 and /etc/init.d/net.wlan0 script; i dunno if this is working, 'cause at the moment i cannot reboot the pc

so i'll try it as soon as possible

hope this could help you

skellr · Post by **skellr** » Thu Mar 24, 2011 12:24 pm

Also make sure that net.wlan0 or net.eth0 isn't a symlink to net.lo in /etc/init.d/

divago · Post by **divago** » Thu Mar 24, 2011 2:52 pm

skellr wrote:Also make sure that net.wlan0 or net.eth0 isn't a symlink to net.lo in /etc/init.d/

ok in my case net.eth0 and net.wlan0 was link to net.lo
so i unlinked it with

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unlink /etc/init.d/net.eth0
unlink /etc/init.d/net.wlan0

and now it works fine

net start with NM (or wicd) and also start sshd...

trossachs · Post by **trossachs** » Fri Nov 04, 2011 8:49 am

I have a similar problem in that whenever I start eth1, it defaults to dhcp and requests an address even though I have specifically specified a static one. Why does it not read from /etc/conf.d/net?

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iface_eth1="192.168.1.6 netmask 255.255.255.0 brd 192.168.1.0"
routes_eth1="default via 192.168.1.1"

bornmw · Post by **bornmw** » Fri Dec 02, 2011 5:56 pm

skellr wrote:Also make sure that net.wlan0 or net.eth0 isn't a symlink to net.lo in /etc/init.d/

but http://www.gentoo.org/doc/en/handbook/h ... t=4&chap=1 says it should be a symlink

bornmw · Post by **bornmw** » Fri Dec 02, 2011 6:57 pm

just for the record - /etc/conf.d/rc is baselayout 1 and is now deprecated
use /etc/rc.conf which is baselayout 2