[SOLVED] Can't figure out to set up static IP

LittleSandra · 2021-01-25 01:01:59

Dear all

This is on a new install, where I have created /etc/systemd/network/20-wired.network and it contains

[Match]
Name=enp0s25

[Network]
Address=192.168.1.10/16
Gateway=192.168.0.1
DNS=192.168.0.1

and doing

systemctl systemd-networkd
ip a

shows I have got the IP, but I can't "ping google.com". I get "Network is unreachable".

Can anyone figure out what I am doing wrong?

Hugs
Sandra

Last edited by LittleSandra (2021-01-26 19:42:00)

Slithery · 2021-01-25 01:13:00

You need to set up systemd-resolved as well.
https://wiki.archlinux.org/index.php/Sy … _and_setup

skunktrader · 2021-01-25 01:55:05

Does it work any better if you set

Address=192.168.0.10/16

twobooks · 2021-01-25 02:04:56

boot from archiso, copy your DNS server from /etc/resolv.conf
boot your newly installed system, you need to install netctl package
there is an example /etc/netctl/examples/ethernet-static,
copy it to /etc/netctl/enp0s25, you need the following lines
Interface=enp0s25
Connection=ethernet
IP=static
Address=('192.168.0.21/24' '192.168.7.21/24')
Gateway='192.168.0.1'
DNS=('164.9.44.117') <= specify your DNS server

then execute,
nectl enable enp0s25
netctl start enp0s25

Last edited by twobooks (2021-01-25 02:07:51)

fukawi2 · 2021-01-25 02:05:57

Post the output of `ip a s` and `ip r s`, and `ping -c1 192.168.0.1`

Archlin · 2021-01-25 06:49:40

That you have an ip is logical since you set it yourself, but when it does not communicate with your router/modem it still will fail.
The reason for that seems that your gateway and dns don't comply with the ip you did set. They are on complete different networks ranges (x168.0.x vs x168.1.x)

fukawi2 · 2021-01-25 10:10:50

@archlin Look at the subnet. They are in the same range when using a /16. Not everything is a /24 network.

Archlin · 2021-01-25 11:15:41

Your right overlooked that.

LittleSandra · 2021-01-26 19:29:19

twobooks wrote:

boot from archiso, copy your DNS server from /etc/resolv.conf
boot your newly installed system, you need to install netctl package
there is an example /etc/netctl/examples/ethernet-static,
copy it to /etc/netctl/enp0s25, you need the following lines
Interface=enp0s25
Connection=ethernet
IP=static
Address=('192.168.0.21/24' '192.168.7.21/24')
Gateway='192.168.0.1'
DNS=('164.9.44.117') <= specify your DNS server
then execute,
nectl enable enp0s25
netctl start enp0s25

This worked for me Thanks so much!

I don't understand however why I cant have

Address=('192.168.1.21/16')

I would argue, that it just allows me to connect to ip addresses from 192.168.0.1 - 192.168.255.255. I guess that isn't the case, so if anyone can explain why, then I would be very interested in knowing

Hugs
Sandra

twobooks · 2021-01-26 20:55:15

theoretically, Address=('192.168.1.21/16') is OK,
however for LAN at home Address=('192.168.0.21/24') is preferred because there are 254 addresses available and that is enough; for LAN in the office Address=('192.168.1.21/16') is still not recommended for security reason, you don't want the staffs in the marketing department to share information with the employees in the accounting department.

Arch Linux

#1 2021-01-25 01:01:59

[SOLVED] Can't figure out to set up static IP

#2 2021-01-25 01:13:00

Re: [SOLVED] Can't figure out to set up static IP

#3 2021-01-25 01:55:05

Re: [SOLVED] Can't figure out to set up static IP

#4 2021-01-25 02:04:56

Re: [SOLVED] Can't figure out to set up static IP

#5 2021-01-25 02:05:57

Re: [SOLVED] Can't figure out to set up static IP

#6 2021-01-25 06:49:40

Re: [SOLVED] Can't figure out to set up static IP

#7 2021-01-25 10:10:50

Re: [SOLVED] Can't figure out to set up static IP

#8 2021-01-25 11:15:41

Re: [SOLVED] Can't figure out to set up static IP

#9 2021-01-26 19:29:19

Re: [SOLVED] Can't figure out to set up static IP

#10 2021-01-26 20:55:15

Re: [SOLVED] Can't figure out to set up static IP

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