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#1 2007-07-31 16:43:45

JaDa
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From: Sun City, CA (native German)
Registered: 2007-04-06
Posts: 210
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[***SOLVED***] "dhcpcd" ? Cable Modem Problem - Archlinux

Cable Modem Problem - Internet with Archlinux

Hardware
Motorola Cable Modem (TimeWarnerCable Roadrunner)
Router ZyXEL X550

There is an issue now with Archlinux and I didn't get the problem.

In the last days I was updating

pacman -Syu

Now the problem.

When I am not online (Internet) I press the "stand by" button on my Cable Modem.

Now when I will go back online and activated the cable modem Archlinux want connect to the Internet. I need Power Off the cable modem, waiting 15 sec. Power on and Archlinux connect then and it works then for the Internet.

In the Network are several computers and this problem is happened only with the Archlinux Computers since a week now. Before all was working fine. 

The Mac, Vista, XP and openSUSE Computers are working fine.

What can I do for trouble shoting and fix the problem?

It is not the ISP, the cable modem or router. I checked the cables, changes the lines, I can't find the issue. I can connect to the router and "log in", Network Printer works. But for Archlinux I need to power off the cable modem and restart the cable modem to get Internet.

Any ideas or help?

Last edited by JaDa (2007-08-10 03:42:21)


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#2 2007-08-02 00:13:05

JaDa
Member
From: Sun City, CA (native German)
Registered: 2007-04-06
Posts: 210
Website

Re: [***SOLVED***] "dhcpcd" ? Cable Modem Problem - Archlinux

lynch, from the USA Linux User Group wrote:

Are you using dhcp for your network?
If all other systems on the lan are able to access the internet with no problems, it sounds like your next step is to check your network card settings.
What does ifconfig tell you?
Do you have any nameservers listed in /etc/resolv.conf?
Also, when testing your modem, you can type 192.168.100.1 in a web browser to access the Motorola status utility. This will tell how close towards the internet you are getting. If you can get the modem status page, then it may well be a dns issue.
Also try pinging a web site like usalug when you cannot access a web site with your browser:

ping -c3 www.usalug.org

.
lynch
http://usalug.org/phpBB2/viewtopic.php?t=11207

Are you using dhcp for your network?

Yes, automatically via DHCP and some boxes are static like the Printerservers & Server

What does ifconfig tell you?

eth0      Link encap:Ethernet  HWaddr 00:13:20:3D:A9:E8
          inet addr:XXX.XXX.XXX.XXX  Bcast:XXX.XXX.XXX.XXX  Mask:255.255.255.0
          inet6 addr: XXXXXXXXXXXXXXX Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2194 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1876 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1962835 (1.8 Mb)  TX bytes:300678 (293.6 Kb)
          Interrupt:16

lo        Link encap:Local Loopback
          inet addr:XXX.XXX.XXX.XXX  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:22 errors:0 dropped:0 overruns:0 frame:0
          TX packets:22 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1100 (1.0 Kb)  TX bytes:1100 (1.0 Kb)

Do you have any nameservers listed in /etc/resolv.conf?

# Generated by dhcpcd for interface eth0
search socal.rr.com
nameserver 66.75.164.90
nameserver 66.75.164.89

Last Update "dhcpcd" Archlinux Build dhcpcd 3.1.3-2 from Aug./01/2007

I just updated the dhcpcd, and can't really tell if it is related to the dhcpcd. Need some test first wink


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#3 2007-08-03 01:48:26

Alejandro Nova
Member
Registered: 2006-09-03
Posts: 20

Re: [***SOLVED***] "dhcpcd" ? Cable Modem Problem - Archlinux

I'm having the same problem with my cable modem. I desperately need to mask the dhcpcd update, because, with dhcpcd-3.0.19, my Internet access is perfect.

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#4 2007-08-03 09:20:21

Lone_Wolf
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From: Netherlands, Europe
Registered: 2005-10-04
Posts: 11,868

Re: [***SOLVED***] "dhcpcd" ? Cable Modem Problem - Archlinux

A possible cause could be that after the cable modem comes back from standby the dhcp releases need to be renewed.

To force renewal of the dhcp lease as root try run :

/etc/rc.d/network stop
/etc/rc.d/network start

(if you don't feel like typing 2 lines you can also do /etc/rc.d/network restart , but this fails sometimes ).

Sidenote : masking ip-adresses

- lo should always be 127.0.0.1 , no need to mask it.

- if the ip address on your system looks like either of
10.x.x.x
169.254.x.x (found mostly on windows systems)
172.16.x.x
192.168.x.x

there's no need to mask it.

Those are private ip-address that can only be reached from inside your local network, NOT from the internet.


Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.


(A works at time B)  && (time C > time B ) ≠  (A works at time C)

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#5 2007-08-10 03:41:40

JaDa
Member
From: Sun City, CA (native German)
Registered: 2007-04-06
Posts: 210
Website

Re: [***SOLVED***] "dhcpcd" ? Cable Modem Problem - Archlinux

Since version 3.1.x of dhcpcd, some users (including myself) have been experimenting problems requesting an IP address from their ISP servers. I noticed the only difference between the old version, and the new one, is that the new one does an ARP check, which brings trouble to some users, while the old one didn't do that check. Anyway, the ARP check can be disabled with the -A option. I would suggest changing the default /etc/conf.d/dhcpcd to this:

DHCPCD_ARGS="[b]-A[/b] -t 30 -h $HOSTNAME"

this solved my problem,

thank's to all smile


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#6 2007-08-13 04:16:43

Alejandro Nova
Member
Registered: 2006-09-03
Posts: 20

Re: [***SOLVED***] "dhcpcd" ? Cable Modem Problem - Archlinux

Solved with dhcpcd 3.1.4!

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