Restart required to connect to the internet

[EcoNico]

Well, it was not obvious to set up my firewall to have port 67 opened, I therefore decided to uninstall the firewall for now...
Unfortunately, nothing new, I still cannot access the net without rebooting..

[FishRCynic]

can you post your /etc/network/interfaces?

[EcoNico]

From gedit /etc/network/interfaces

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp

[FishRCynic]

From gedit /etc/network/interfaces

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp



-----------------------------------------------------

using intrepid / hardy ?

comment out

#iface eth0 inet dhcp

or delete it

and reboot

avahi is supposed to figure this all out without help

(at least so far it does here)

[EcoNico]

I am using:

cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=8.04
DISTRIB_CODENAME=hardy
DISTRIB_DESCRIPTION="Ubuntu 8.04.2"


I tried but same thing..I ended up reinstalling the OS, thinking something had gone wrong during the first install, but still the same..


Here is some more ifconfig info completed with the result of netstat -rn
Note that I uninstall avahi-autoipd and made sure /etc/network/interfaces was taking into account the dhcp server



WHEN IT WORKS


ifconfig
eth0 Link encap:Ethernet HWaddr 00:00:6c:40:87:66
inet adr:192.168.1.27 Bcast:192.168.1.255 Masque:255.255.255.0
adr inet6: fe80::200:6cff:fe40:8766/64 Scope:Lien
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Packets reçus:2773 erreurs:0 :0 overruns:0 frame:0
TX packets:3199 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:1000
Octets reçus:2209995 (2.1 MB) Octets transmis:655552 (640.1 KB)
Interruption:220 Adresse de base:0x6000

lo Link encap:Boucle locale
inet adr:127.0.0.1 Masque:255.0.0.0
adr inet6: ::1/128 Scope:Hôte
UP LOOPBACK RUNNING MTU:16436 Metric:1
Packets reçus:1942 erreurs:0 :0 overruns:0 frame:0
TX packets:1942 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:0
Octets reçus:97100 (94.8 KB) Octets transmis:97100 (94.8 KB)

nicole@nicole-desktop:~$ netstat -rn
Table de routage IP du noyau
Destination Passerelle Genmask Indic MSS Fenêtre irtt Iface
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 eth0




AFTER COMPUTER SWITCHED OFF AND POWER CORD UNPLUGGED ---- THEN COMPUTER POWER CORD PLUGGED BACK AND COMPUTER RESTARTED


ifconfig
eth1 Link encap:Ethernet HWaddr 00:00:6c:4c:ad:08
adr inet6: fe80::200:6cff:fe4c:ad08/64 Scope:Lien
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Packets reçus:0 erreurs:0 :0 overruns:0 frame:0
TX packets:11 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:1000
Octets reçus:0 (0.0 B) Octets transmis:2222 (2.1 KB)
Interruption:220 Adresse de base:0x8000

lo Link encap:Boucle locale
inet adr:127.0.0.1 Masque:255.0.0.0
adr inet6: ::1/128 Scope:Hôte
UP LOOPBACK RUNNING MTU:16436 Metric:1
Packets reçus:1602 erreurs:0 :0 overruns:0 frame:0
TX packets:1602 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:0
Octets reçus:80100 (78.2 KB) Octets transmis:80100 (78.2 KB)

nicole@nicole-desktop:~$ netstat -rn
Table de routage IP du noyau
Destination Passerelle Genmask Indic MSS Fenêtre irtt Iface




Note that when I restart the computer, the LEDs of the router/modem turn ON, which should mean the Ethernet card from the mother board and the router somehow speak together, right ??
If it is the case, knowing there is no firewall, and that I have not messed around with the ports (yet), what is stopping the router / Ethernet card to continue communicating after a very first start?

[superprash2003]

@econico
why not it should work?? dhclient requests the router for an ip..

[EcoNico]

using sudo dhclient eth0 indeed works, but only when I cut the network connection by unplugging the cable from the router and then plugging back in.

The problem occurs when I stop the computer and unplugg the power cable from the power outlet.

On the other hand, whenever I use the computer with the internet connection OK and I switch it off without unplugging the power cord from the power outlet, I can see the LEDs of the router close to the Ethernet cable still being lit; in that case, I can start ubuntu and get internet directly..

Could you please tell me if there is an Ethernet card driver I need?
Is there an extra port I need to force open at start up?

[FishRCynic]

/what is the network card name/version &/or chipset

when you first boot does it show up in lspci?

[EcoNico]

Here is the info I get for the network controller integrated on the mother board, after a lspci -v


00:07.0 Bridge: nVidia Corporation MCP61 Ethernet (rev a2)
Subsystem: ASRock Incorporation 939NF6G-VSTA Board
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 220
Memory at dfffd000 (32-bit, non-prefetchable) [size=4K]
I/O ports at e480 [size=8]
Capabilities: <access denied>


Note:I reinstalled avahi-autoipd

[FishRCynic]

02:00.0 Network controller: Intel Corporation PRO/Wireless 4965 AG or AGN [Kedron] Network Connection (rev 61)
Subsystem: Intel Corporation Device 1100
Flags: bus master, fast devsel, latency 0, IRQ 2297
Memory at f4000000 (64-bit, non-prefetchable) [size=8K]
Capabilities: <access denied>
Kernel driver in use: iwlagn
Kernel modules: iwlagn

08:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 01)
Subsystem: Hewlett-Packard Company Device 30cc
Flags: bus master, fast devsel, latency 0, IRQ 2298
I/O ports at c000 [size=256]
Memory at f8000000 (64-bit, non-prefetchable) [size=4K]
[virtual] Expansion ROM at c2000000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: r8169
Kernel modules: r8169

the above is a partial from this laptop as an example from lspci -v


there should be some "network" controller listed like above
containing something of Realtek PHY RTL8201CL

when you first boot do you get an ethernet controller listed similar to above?

when you reboot does it magically appear in lspci -v?

you can try enabling Pci power on in your bios.
(under ADVANCED setting ACPI