Sstrhsrtj

This was asked here, but for Debian Wheezy, and the respondent answered the question with a question. It was also asked here, but the answer is not working.

The goal here is to set a static ip for a wifi device on a machine called myhost, which is running Ubuntu 18.04 LTS. The device name is wlp1s0, and the desired ip address is 192.168.1.10. All attempts have failed.

Sequence of steps:

1) Identify ip:

$ ip route

default via 192.168.1.254 dev wlp1s0 proto dhcp metric 600 

169.254.0.0/16 dev wlp1s0 scope link metric 1000 

192.168.1.0/24 dev wlp1s0 proto kernel scope link src 192.168.1.154 metric 600 



$ route -n

Kernel IP routing table

Destination     Gateway         Genmask         Flags Metric Ref    Use Iface

0.0.0.0         192.168.1.254   0.0.0.0         UG    600    0        0 wlp1s0

169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 wlp1s0

192.168.1.0     0.0.0.0         255.255.255.0   U     600    0        0 wlp1s0

2) Examine /etc/resolv.conf

$ cat /etc/resolv.conf

# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)

#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN

# 127.0.0.53 is the systemd-resolved stub resolver.

# run "systemd-resolve --status" to see details about the actual nameservers.



nameserver 127.0.0.1

search attlocal.net

3) Bring down the device

sudo ip link set down

4) Edit /etc/network/interfaces

Edited version:

cat /etc/network/interfaces

# interfaces(5) file used by ifup(8) and ifdown(8)

auto lo

iface lo inet loopback



auto wlp1s0

iface wlp1s0 inet static

    address 192.168.1.10

    netmask 255.255.255.0

    gateway 192.168.1.254

5) Edit /etc/hosts

Edited version:

cat /etc/hosts

127.0.0.1   localhost

192.168.1.10     myhost



# The following lines are desirable for IPv6 capable hosts

::1     ip6-localhost ip6-loopback

fe00::0 ip6-localnet

ff00::0 ip6-mcastprefix

ff02::6 ip6-allnodes

ff02::2 ip6-allrouters

192.168.1.180 mysystem.mydomain

6) Bring device back up:

sudo ip link set wlp1s0 up

7) Reboot machine

reboot

After reboot

$ ip route

default via 192.168.1.254 dev wlp1s0 onlink linkdown 

169.254.0.0/16 dev wlp1s0 scope link metric 1000 linkdown 

192.168.1.0/24 dev wlp1s0 proto kernel scope link src 192.168.1.10 linkdown



$ route -n

Kernel IP routing table

Destination     Gateway         Genmask         Flags Metric Ref    Use Iface

0.0.0.0         192.168.1.254   0.0.0.0         UG    0      0        0 wlp1s0

169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 wlp1s0

192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 wlp1s0



$ dmesg | grep wlp1s0

[   37.095682] iwlwifi 0000:01:00.0 wlp1s0: renamed from wlan0

[   38.911441] IPv6: ADDRCONF(NETDEV_UP): wlp1s0: link is not ready

Attempted to add nameservers to /etc/network/interfaces:

cat /etc/network/interfaces

# interfaces(5) file used by ifup(8) and ifdown(8)

auto lo

iface lo inet loopback



auto wlp1s0

iface wlp1s0 inet static

    address 192.168.1.10

    netmask 255.255.255.0

    gateway 192.168.1.254

    dns-nameservers 192.168.1.254

That did not work.

What's missing here?