[arch-general] manually configure network

[mick howe]

On 13 July 2017 at 03:14, Rich <rich-mail at octoxol.com> wrote:

>
>
> On 07/12/2017 09:58 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​
>>
>>
>>
>>> 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.
>>>
>>>
>> ​About april 2013​
>> ​, can't remember details of what I did then but I would have used what
>> was
>> most like the ​the original 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
>>>
>>> ---
>>> mrrob
>>> ---
>>>
>>>
>>
>> You are probably using dhcpcd. This is what is installed when initially
> setting up the OS. Depending on exactly what settings are being reverted to
> default it may be normal behavior. What you need to do is find out exactly
> which network manager you are using and exactly what settings are not
> sticking across a reboot. The fix is probably not difficult but need more
> info to be able to make intelligent suggestions. I had a problem with
> dhcpcd reverting my DNS servers to the ISP defaults on every restart.
>
> --Rich
>