[Arm-dev] Somewhat solved - Re: Problems with eth0 - Re: What is ifcfg-link?

Fri Aug 3 03:15:17 UTC 2018
Robert Moskowitz <rgm at htt-consult.com>

The problem is the max= line below.

I may have to go back to putting in a 70-persistant (or whatever it is) 
rule.  Had to do this on an earlier uboot.

On 08/02/2018 01:40 PM, Robert Moskowitz wrote:
> I used the following nmcli commands:
>
> nmcli con delete eth0
> nmcli con add type ethernet con-name eth0 ifname eth0 ip4 
> 192.168.129.11/23 gw4 192.168.129.1
> nmcli con mod eth0 ipv4.dns "50.253.254.2 192.168.129.1"
> nmcli con mod eth0 mac "02:67:15:00:81:0B"
>
> This created the ifcfg-eth0 file:
>
> TYPE=Ethernet
> PROXY_METHOD=none
> BROWSER_ONLY=no
> BOOTPROTO=none
> IPADDR=192.168.129.11
> PREFIX=23
> GATEWAY=192.168.129.1
> DEFROUTE=yes
> IPV4_FAILURE_FATAL=no
> IPV6INIT=yes
> IPV6_AUTOCONF=yes
> IPV6_DEFROUTE=yes
> IPV6_FAILURE_FATAL=no
> IPV6_ADDR_GEN_MODE=stable-privacy
> NAME=eth0
> # UUID=c05a6a2c-e720-453e-9897-edbc109a9e11
> DEVICE=eth0
> ONBOOT=yes
> DNS1=50.253.254.2
> DNS2=192.168.129.1
> HWADDR=02:67:15:00:81:0B
>
> I moved the ethernet cable from the vlan I have been testing with that 
> has dhcp to the 192.168.129.1 vlan that lacks dhcp and ran:
>
> nmcli con up eth0
> Error: Connection activation failed: No suitable device found for this 
> connection.
>
> No addresses on eth0
>
> # ip a
> 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN 
> group default qlen 1000
>     link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
>     inet 127.0.0.1/8 scope host lo
>        valid_lft forever preferred_lft forever
>     inet6 ::1/128 scope host
>        valid_lft forever preferred_lft forever
> 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP 
> group default qlen 1000
>     link/ether 02:c4:03:82:c1:53 brd ff:ff:ff:ff:ff:ff
>     inet6 fe80::ba72:3d43:b97:596c/64 scope link noprefixroute
>        valid_lft forever preferred_lft forever
>
> I commented out that UUID line, and still nothing on eth0.
>
> I moved the cable back to the old vlan and eth0 came right up with its 
> dhcp address, not the one in ifcfg-eth0.
>
> So, OK, what is going on here?  This worked just fine back in the old 
> 1611 image.  What is this ifcfg-link file that seems to be controlling 
> the ethernet connection?  How do I get things to work using nmcli?
>
> thanks
>
>
> I rebooted, and still no
>
>
> On 08/01/2018 02:04 PM, Robert Moskowitz wrote:
>> I went looking for /etc/sysconfig/network-scripts/ifcfg-eth0 to set 
>> it up for static addressing.
>>
>> Instead I found ifcfg-link
>>
>> What is this?
>>
>> In the past I was usin nmcli:
>>
>> ifname=eth0
>> nmcli con delete $ifname
>> nmcli con add type ethernet con-name $ifname ifname $ifname ip4 
>> $your_ipv4_address/$your_ipv4_prefix gw4 $your_ipv4_gateway
>> nmcli con mod $ifname ipv4.dns "$your_ipv4_dns1 $your_ipv4_dns2"
>> # optionally set your MAC address
>> # your_mac=
>> # nmcli con mod $ifname mac "$your_mac"
>> nmcli con up $ifname
>>
>> (that con add above is line wrapping in this email)
>>
>> ip a
>>
>> shows eth0; do I just use my nmcli script as I did for the 1611 image?
>>
>> thanks
>>
>>
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>>
>
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