f22: how to change default gateway via line command

[Rick Stevens]

On 06/09/2015 03:40 PM, Dario Lesca wrote:
> Il giorno mar, 09/06/2015 alle 15.44 +0800, Ed Greshko ha scritto:
>> Or not....
>>
>> [root at f22k ~]# nmcli conn mod enp0s3 ipv4.gateway 192.168.1.18
>> Error: Failed to modify connection 'enp0s3': ipv4.gateway: gateway
>> cannot be set if there are no addresses configured
>>
>> FWIW, on this system ....
>>
>> [root at f22k ~]# ip route sho
>> default via 192.168.1.1 dev enp0s3  proto static  metric 100
>> 192.168.1.0/24 dev enp0s3  proto kernel  scope link  src
>> 192.168.1.224  metric 100
>>
>> [root at f22k ~]# nmcli conn show enp0s3 | grep 192.168.1.1
>> IP4.GATEWAY:                            192.168.1.1
>> IP4.DNS[1]:                             192.168.1.1
>> DHCP4.OPTION[5]:                        domain_name_servers =
>> 192.168.1.1
>> DHCP4.OPTION[8]:                        dhcp_server_identifier =
>> 192.168.1.1
>> DHCP4.OPTION[17]:                       routers = 192.168.1.1
>> DHCP4.OPTION[29]:                       next_server = 192.168.1.1
>>
>> I'm not the OP, but I figured I'd test it out anyway.
>
> I have the same error:
>
> [lesca at dodo ~]$ nmcli conn show p6p1 | grep -E '(192.168.61.|ipv4.add)'
> ipv4.addresses:
> IP4.INDIRIZZO[1]:                       192.168.61.80/24
> IP4.GATEWAY:                            192.168.61.254
> IP4.DNS[1]:                             192.168.61.254
> DHCP4.OPZIONE[4]:                       server_name = 192.168.61.254
> DHCP4.OPZIONE[5]:                       domain_name_servers = 192.168.61.254
> DHCP4.OPZIONE[7]:                       ip_address = 192.168.61.80
> DHCP4.OPZIONE[10]:                      dhcp_server_identifier = 192.168.61.254
> DHCP4.OPZIONE[13]:                      broadcast_address = 192.168.61.255
> DHCP4.OPZIONE[18]:                      routers = 192.168.61.254
> DHCP4.OPZIONE[28]:                      network_number = 192.168.61.0
> DHCP4.OPZIONE[30]:                      next_server = 192.168.61.254
>
> [lesca at dodo ~]$ LANG=c sudo nmcli conn mod p6p1 ipv4.gateway 192.168.61.250
> Error: Failed to modify connection 'p6p1': ipv4.gateway: gateway cannot be set if there are no addresses configured
>
> This occur why the field "ipv4.addresses" is empty, like many other
> "ipv4.*" flags:
>
> [lesca at dodo ~]$ nmcli conn show p6p1 | grep ipv4.
> ipv4.method:                            auto
> ipv4.dns:
> ipv4.dns-search:
> ipv4.addresses:
> ipv4.gateway:                           --
> ipv4.routes:
> ipv4.route-metric:                      -1
> ipv4.ignore-auto-routes:                no
> ipv4.ignore-auto-dns:                   no
> ipv4.dhcp-client-id:                    --
> ipv4.dhcp-send-hostname:                yes
> ipv4.dhcp-hostname:                     --
> ipv4.never-default:                     no
> ipv4.may-fail:                          yes

I think you have to change the method to "manual", then set the IP
address and route:

	sudo nmcli conn mod p6p1 ipv4.method manual ipv4.address 
192.168.61.80/24 ipv4.gateway 192.168.61.254

The "auto" method for an ethernet port means DHCP.
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- Rick Stevens, Systems Engineer, AllDigital    ricks at alldigital.com -
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