Arch Linux

fried-motherboards

Member

From: US

Registered: 2022-10-09

Posts: 4

Arch ISO failing to ping devices outside of network

Hello,

I'm attempting to install fresh from an Arch USB ISO, and can successfully boot into UEFI mode. My Ethernet interface (in this case named enp33s0) is failing to ping to devices outside of my network (College dorm network over ethernet). Pinging 8.8.8.8 and archlinux.org fails with no packets received.

I have confirmed the interface has received a dynamic IP address from the dorm's network, and can even ping devices on the network like my laptop and phone, and have also confirmed systemd-networkd and systemd-resolved are both running and have assigned a proper address. ip route outputs:

default via 10.150.12.1 dev enp33s0 proto dhcp src 10.150.14.86 metric 100
8.8.4.4 via 10.150.12.1 dev enp33s0 proto dhcp src 10.150.14.86 metric 100
8.8.8.8 via 10.150.12.1 dev enp33s0 proto dhcp src 10.150.14.86 metric 100
10.150.12.0/22 dev enp33s0 proto kernel scope link src 10.150.14.86 metric 100
10.150.12.1 dev enp33s0 proto dhcp scope link src 10.150.14.86 metric 100

Any help would be appreciated, thank you!

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- Zeke
(Ezekiel Hernandez-Hall)

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,354

Re: Arch ISO failing to ping devices outside of network

Does your college network use a captive portal that keeps you in a virtual jail until you log in?

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fried-motherboards

Member

From: US

Registered: 2022-10-09

Posts: 4

Re: Arch ISO failing to ping devices outside of network

Does your college network use a captive portal that keeps you in a virtual jail until you log in?

Not for the dorm's wired connection. I have been using this exact same connection for my Manjaro installation with no problems whatsoever.

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- Zeke
(Ezekiel Hernandez-Hall)

Lone_Wolf

Administrator

From: Netherlands, Europe

Registered: 2005-10-04

Posts: 13,392

Re: Arch ISO failing to ping devices outside of network

default via 10.150.12.1 dev enp33s0 proto dhcp src 10.150.14.86 metric 100
8.8.4.4 via 10.150.12.1 dev enp33s0 proto dhcp src 10.150.14.86 metric 100
8.8.8.8 via 10.150.12.1 dev enp33s0 proto dhcp src 10.150.14.86 metric 100
10.150.12.0/22 dev enp33s0 proto kernel scope link src 10.150.14.86 metric 100
10.150.12.1 dev enp33s0 proto dhcp scope link src 10.150.14.86 metric 100

On most networks I'd expect just 2 lines , the default one and the 10.150.12.0/22 .
No  idea what created them.

What is the output of

$ tracepath -4 95.217.163.246
$ tracepath -6 2a01:4f9:c010:6b1f::1

(those are the ipv4 & ipv6 addresses of archlinux.org)

Last edited by Lone_Wolf (2022-10-10 10:51:15)

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

clean chroot building not flexible enough ?
Try clean chroot manager by graysky

fried-motherboards

Member

From: US

Registered: 2022-10-09

Posts: 4

Re: Arch ISO failing to ping devices outside of network

Sorry for the late response, my output of

$ tracepath -4 95.217.163.246
$ tracepath -6 2a01:4f9:c010:6b1f::1

Is as follows:

1?: [LOCALHOST]              pmtu 1500
1: no reply
2: no reply

A bunch of no-reply responses later...

30: no reply
     Too many hops: pmtu 1500
     Resume: pmtu 1500

As for IPv6, I get:

1:     send failed
        Resume: pmtu 128000

That help at all?

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- Zeke
(Ezekiel Hernandez-Hall)

Lone_Wolf

Administrator

From: Netherlands, Europe

Registered: 2005-10-04

Posts: 13,392

Re: Arch ISO failing to ping devices outside of network

It kinda suggests the device at 10.150.12.1 is blocking lots of icmp protocols .

What Is the output of those commands on the manjaro install where things work ?

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

clean chroot building not flexible enough ?
Try clean chroot manager by graysky

fried-motherboards

Member

From: US

Registered: 2022-10-09

Posts: 4

Re: Arch ISO failing to ping devices outside of network

On my current Manjaro system, the output of

$ ip route

is:

default via 10.150.12.1 dev enp33s0 proto dhcp src 10.150.15.42 metric 100
default via 10.150.12.1 dev wlp35s0 proto dhcp src 10.150.14.87 metric 600
10.150.12.0/22 dev enp33s0 proto kernel scope link src 10.150.15.42 metric 100
10.150.12.0/22 dev wlp35s0 proto kernel scope link src 10.150.14.87 metric 600

While the outputs of

$ tracepath -4 95.217.163.246 && tracepath -6 2a01:4f9:c010:6b1f::1

are the exact same as the Arch ISO's execution. Funnily enough, I can't currently ping 8.8.8.8 from my Manjaro installation either, but I still have internet access...

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- Zeke
(Ezekiel Hernandez-Hall)