[SOLVED] Arch Installation no internet access using ethernet

hugosednax · 2021-06-30 10:46:25

I booted from a USB with the latest arch ISO. Everywhere people say that via ethernet connection it should work out of the box, but it is not working for me.
I have already tried to disable ipv6, defining static ip and gateway, add custom routes, nothing worked so far.

I rebooted to discard all changes to run the following commands to show what is happening.

while running command "ping archlinux.org", it outputs:
ping: archlinux.org: Name or service not known

pinging the IP directly also fails: "ping 2a01:4f9:c010:6b1f::1", outputs:
PING 2a01:4f9:c010:6b1f::1(2a01:4f9:c010:6b1f::1) 56 data bytes
From 2001:818:e2fb:5500:d5:d3d0:7110:dbd9 icmp_seq=1 Destination unreachable: Address unreachable
From 2001:818:e2fb:5500:d5:d3d0:7110:dbd9 icmp_seq=2 Destination unreachable: Address unreachable
From 2001:818:e2fb:5500:d5:d3d0:7110:dbd9 icmp_seq=3 Destination unreachable: Address unreachable
---- 2a01:4f9:c010:6b1f::1 ping statistics ---
4 packets transmitted, 0 received, +3 errors, 100% packet loss, time 3032ms

checking the ethernet adapter using "lspci -v":
Ethernet controller: Intel Corporation Ethernet Connection I217-V (rev 05)
...
Kernel modules: e1000e

Output of command "dmesg -T | grep e1000e":
<Timestamp> e1000e: Intel(R) PRO/1000 Network Driver
<Timestamp> e1000e: Copyright (c) 1999 - 2015 Intel Corporation.
<Timestamp> e1000e: 0000:00:19.0: Interrupt Throttling Rate (ints/secs) set to dynamic conservative mode
<Timestamp> e1000e: 0000:00:19.0: eth0: (PCI Express:2.5GT/s:Width x1) 40:16:7e:ae:62:5b
<Timestamp> e1000e: 0000:00:19.0: eth0: Intel(R) PRO/1000 Network Connection
<Timestamp> e1000e: 0000:00:19.0: eth0: MAC: 11, PHY: 12, PBA No: FFFFFF-0FF
<Timestamp> e1000e: 0000:00:19.0: eno1: renamed from eth0
<Timestamp> e1000e: 0000:00:19.0: eno1: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None

Output of command "ip a":
1: lo: <LOOPBACK (...)
2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether 40:16:7e:ae:62:5b brd ff:ff:ff:ff:ff:ff
altname enp0s25
inet6 2001:818:e2fb:5500:d5:d3d0:7110:dbd9/64 scope global temporary dynamic
valid_lft 86386sec prefered_lft 3586sec
inet6 2001:818:e2fb:5500:4216:7eff:feae:625b/64 scope global dynamic mngtmpaddr noprefixroute
valid_lft 86386sec prefered_lft 3586sec
inet6 fe80::4216:7eff:feae:625b/64 scope link
valid_lft forever prefered_lft forever

Output of command "ip route show" is empty

Output of command "ip neighbor show":
fe80::1 dev eno1 router INCOMPLETE

If you have any ideas let me know please.

Note: I am manually copying the output since I can't ssh to the installation pc due to this lack of connectivity.

Last edited by hugosednax (2021-06-30 17:02:17)

hugosednax · 2021-06-30 11:08:55

Also running command "dhcpcd eno1" it fails:

dhcpcd-9.4.0 starting
DUID 00:04:48:64:ab:c0:d7:da:11:dd:80:b9:40:16:7e:ae:62:5b
eno1: IAID 7e:ae:62:5b
eno1: soliciting a DHCP lease
eno1: soliciting an IPv6 router
eno1: Router Advertisement from fe80::1
eno1: adding address 2001:818:e2fb:5500:624e:7140:a558:ef79/64
eno1: adding route to 2001:818:e2fb:5500::/64
eno1: adding default route via fe80::1
eno1: requesting DHCPv6 information
eno1: fe80::1 is unreachable
eno1: soliciting an IPv6 router
eno1: failed to request DHCPv6 information
eno1: no IPv6 Routers available
timed out

seth · 2021-06-30 14:49:29

Please use code tags, https://bbs.archlinux.org/help.php#bbcode

nmap --script broadcast-dhcp-discover

Do you expect to have an IPv6 gateway? Do you expect IPv4 ?
What is the gateway? Router? Or direct modem connection?
Your device? MAC filter?

hugosednax · 2021-06-30 16:58:42

seth wrote:

Please use code tags, https://bbs.archlinux.org/help.php#bbcode
nmap --script broadcast-dhcp-discover
Do you expect to have an IPv6 gateway? Do you expect IPv4 ?
What is the gateway? Router? Or direct modem connection?
Your device? MAC filter?

Thank you for your reply and I will try to make the question clearer next time.
Well, I started the pc to run the command you suggested but first I tried ping as I always did and somehow it worked now. I have been two days trying everything, including pc restart/shutdown, router restart, and now without a specific action it worked.

So I will be closing the thread although I did not manage to understand the error.

EDIT: I managed to find the root cause:
So that time I managed to finish arch installation and I also installed KDE. I logged into KDE everything was fine, internet access was fine.
Today I booted again and I lost the connection. After some research I managed to find that it was probably a conflict with my Windows installation, due to Windows Power Management settings in the network adapter. So I disabled all settings in that tab and booted back to Arch.
After that I also needed to follow this step: https://askubuntu.com/a/910882 and everything is fine now.

I hope this may help someone.

Last edited by hugosednax (2021-07-01 08:53:55)

Arch Linux

#1 2021-06-30 10:46:25

[SOLVED] Arch Installation no internet access using ethernet

#2 2021-06-30 11:08:55

Re: [SOLVED] Arch Installation no internet access using ethernet

#3 2021-06-30 14:49:29

Re: [SOLVED] Arch Installation no internet access using ethernet

#4 2021-06-30 16:58:42

Re: [SOLVED] Arch Installation no internet access using ethernet

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