[arch-general] manually configure network

[Rich]

On 07/12/2017 10:29 PM, mick howe via arch-general wrote:
> On 13 July 2017 at 01:17, Mrrob <rob at mrrob.info> wrote:
> 
>> On 13/07/17 07:09, mick howe via arch-general wrote:
>>
>>> I've just changed ISP and I can't get the changed configuration to stick.
>>>
>>> I'm using 'static IP address - manual assignment' from Network
>>> configuration wiki page.
>>>
>>> I need to change my address from 192.168.1.0/24 to 192.168.20.1/24.
>>>
>>> using iproute2 tools as per wiki I can get everything working UNTIL I
>>> reboot, at which time some of the settings show the old values and others
>>> the new.
>>>
>>> I've been manually configuring these settings without problems since I
>>> started using linux in 1994.
>>>
>>>
>>>
>> I assume that (as well as changing ISPs) you have changed your router and
>> it has a different internal range to the old one.
>>
> ​Correct, and the ISP failed to include modem password in the box.
> 
> 
>>
>> If you have an IP address automatically after booting then something is
>> bringing up the network automatically. Assuming your Arch install is newer
>> than 2013 then I would expect you've configured netctl to manage the
>> interface.
>>
> ​I had to reinstal when I moved in April 2013, would have used the simplest
> manual method
> ​
> 
> 
>> Look in /etc/netctl
>>
>   [mick at cave ~]$ ls -aR /etc/netctl/etc/netctl:
> .  ..  examples  hooks  interfaces
> 
>> /etc/netctl/examples:
>> .             ethernet-static tunnel     wireless-wpa
>> ..            macvlan-dhcp  tuntap     wireless-wpa-config
>> bonding  macvlan-static vlan-dhcp wireless-wpa-configsection
>> bridge    mobile_ppp      vlan-static    wireless-wpa-static
>> ethernet-custom  openvswitch      wireless-open
>> ethernet-dhcp
>> ​  ​
>> pppoe
>> ​   ​
>> wireless-wep
>>
>> /etc/netctl/hooks:
>> .  ..
>>
>> /etc/netctl/interfaces:
>> .  ..
>>
> 
> 
> 
>> and
>>
>> $ systemctl list-unit-files --state=enabled
>>
>>   [mick at cave ~]$ systemctl list-unit-files --state=enabled
> UNIT FILE                             STATE
> org.cups.cupsd.path                   enabled
> autovt at .service                       enabled
> dbus-org.freedesktop.network1.service enabled
> dbus-org.freedesktop.resolve1.service enabled
> display-manager.service               enabled
> getty at .service                        enabled
> httpd.service                         enabled
> lxdm.service                          enabled
> nmbd.service                          enabled
> openntpd.service                      enabled
> org.cups.cupsd.service                enabled
> postgresql.service                    enabled
> smbd.service                          enabled
> systemd-networkd.service              enabled
> systemd-resolved.service              enabled
> org.cups.cupsd.socket                 enabled
> systemd-networkd.socket               enabled
> remote-fs.target                      enabled
> 
> 18 unit files listed.
> lines 1-21
> ​is blahbluhblah​network1.service the guilty party or is it
> systemd-networkd.service?
> 
> what am I looking for in these?
> 
> 
This is the wiki page for the network manager you are using: 
systemd-networkd https://wiki.archlinux.org/index.php/Systemd-networkd

--Rich