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colag
Tux's lil' helper
Tux's lil' helper


Joined: 26 Sep 2009
Posts: 100
Location: Dhaka, Bangladesh

PostPosted: Sun Apr 06, 2014 1:02 pm    Post subject: Can not start network connection Reply with quote

It is PPPoE (ppp over ethernet)
Followed this: http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?part=4&chap=3

Code:
ln -s /etc/init.d/net.lo /etc/init.d/net.ppp0
ln -s /etc/init.d/net.lo /etc/init.d/net.eth0

config_eth0=null (Specify your ethernet interface)
config_ppp0="ppp"
link_ppp0="eth0" (Specify your ethernet interface)
plugins_ppp0="pppoe"
username_ppp0='user'
password_ppp0='password'
pppd_ppp0="
noauth
defaultroute
usepeerdns
holdoff 3
child-timeout 60
lcp-echo-interval 15
lcp-echo-failure 3
noaccomp noccp nobsdcomp nodeflate nopcomp novj novjccomp"

rc_need_ppp0="net.eth0"


But ifconfig doesn't show eth0 device, network is not starting, pppoe-start doesn't work. What can be the reason for this?
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Hu
Moderator
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Joined: 06 Mar 2007
Posts: 13493

PostPosted: Sun Apr 06, 2014 3:47 pm    Post subject: Reply with quote

There are several possible reasons. What is the output of emerge --info ; ip l ; ip a?
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colag
Tux's lil' helper
Tux's lil' helper


Joined: 26 Sep 2009
Posts: 100
Location: Dhaka, Bangladesh

PostPosted: Mon Apr 07, 2014 2:46 am    Post subject: Where is eth0 device? Reply with quote

ip a or ip l displays a device named "enp2s0" or something like that. But eth0 is expected. /etc/init.d/net.lo is symlinkd to /etc/init.d/net.eth0 , /etc/init.d/net.eth0 start get error or not device found like error.

It is pppoe connection. So during pppoe-setup i had to type enp2s0 instead of eth0, then it worked.

Did this from quick install:

Code:
livecd etc # cd init.d
livecd init.d # ln -s net.lo net.eth0
livecd init.d # cd ../conf.d
livecd conf.d # echo 'config_eth0="192.168.1.10 netmask 255.255.255.0 brd 192.168.1.255"' >> net
livecd conf.d # echo 'routes_eth0="default via 192.168.1.1"' >> net
livecd conf.d # echo 'hostname="myhostname"' > hostname
livecd conf.d # rc-update add net.eth0 default


What can be the reason not having eth0 ?
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khayyam
Watchman
Watchman


Joined: 07 Jun 2012
Posts: 6228
Location: Room 101

PostPosted: Mon Apr 07, 2014 3:02 am    Post subject: Re: Where is eth0 device? Reply with quote

colag wrote:
ip a or ip l displays a device named "enp2s0" or something like that. But eth0 is expected. /etc/init.d/net.lo is symlinkd to /etc/init.d/net.eth0 , /etc/init.d/net.eth0 start get error or not device found like error.

colag ... simply substitute eth0 for enp2s0 ...

Code:
# rc-update del net.eth0 default
# rm /etc/init.d/net.eth0
# ln -s /etc/init.d/net.lo /etc/init.d/net.enp2s0
# sed -i.bak -e 's/eth0/enp2s0/g' /etc/conf.d/net
# rc-update add net.enp2s0 default

best ... khay
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Hu
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Joined: 06 Mar 2007
Posts: 13493

PostPosted: Mon Apr 07, 2014 3:17 am    Post subject: Re: Where is eth0 device? Reply with quote

colag wrote:
What can be the reason not having eth0 ?
You might have omitted the driver for the network card. However, based on the device name provided, it is more likely that you installed a braindamaged version of udevd and did not tell it not to be stupid. It then renamed your device.
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Jaglover
Watchman
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Joined: 29 May 2005
Posts: 6957
Location: Saint Amant, Acadiana

PostPosted: Mon Apr 07, 2014 3:26 am    Post subject: Reply with quote

^^ ;)

Get eudev or mdev or go static. With udev pass net.ifnames=0 to your kernel.
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Please learn how to denote units correctly!
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666threesixes666
Veteran
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Joined: 31 May 2011
Posts: 1248
Location: 42.68n 85.41w

PostPosted: Mon Apr 07, 2014 3:27 am    Post subject: Reply with quote

enp2s0 = udev / systemd network interface persistent naming.

you can disable this by 1 inserting a udev rule to over ride the rule that is generating those names, or 2 run eudev instead. there are more options, like mdev or static dev but i dont know too much about those.

Code:

ln -s /dev/null /etc/udev/rules.d/80-net-name-slot.rules


according to https://forums.gentoo.org/viewtopic-p-7280006.html#7280006
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desultory
Administrator
Administrator


Joined: 04 Nov 2005
Posts: 9178

PostPosted: Mon Apr 07, 2014 3:46 am    Post subject: Reply with quote

Merged the preceding five posts.
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