UCI sets the MACs but network restart loses them

Installing and Using OpenWrt
1

I'm working with a nanopi r5c which doesn't have static MACs.
No problem, I make my own up and set them using UCI.

# uci set network.@device[0].macaddr="11:22:33:44:55:61"
# uci set network.@device[2].macaddr="11:22:33:44:55:62"
# uci commit network

I look at the /etc/config/network file and it has my MAC addresses, great.
I look at ifconfig and the MAC addresses are the random ones generated by the os on boot.
I use /etc/init.d/network restart and a new set of MAC addresses are shown in ifconfig, even though mine are set in the network file.

What am I doing wrong?

2

It should be noted that the second digit of a MAC can't be 1-- it needs to be even, and if it is a locally created MAC it should be 2, 6, A, or E.

Do these device sections refer to the correct devices?

1 Like
3

Hi,

I just made those up for the post :).
Here is how things look;

# uci set network.@device[0].macaddr="93:4e:d9:cd:be:5c"
# uci set network.@device[2].macaddr="93:4e:d9:cd:be:5d"
# uci commit network
# cat /etc/config/network

config interface 'loopback'
        option device 'lo'
        option proto 'static'
        option ipaddr '127.0.0.1'
        option netmask '255.0.0.0'

config globals 'globals'
        option ula_prefix 'fd00:ab:cd::/48'

config device
        option name 'eth0'
        option macaddr '93:4e:d9:cd:be:5c'

config interface 'wan'
        option device 'eth0'
        option proto 'dhcp'

config interface 'wan6'
        option device 'eth0'
        option proto 'dhcpv6'

config device
        option name 'br-lan'
        option type 'bridge'
        list ports 'eth1'

config device
        option name 'eth1'
        option macaddr '93:4e:d9:cd:be:5d'

config interface 'lan'
        option device 'br-lan'
        option proto 'dhcp'

# ifconfig
br-lan    Link encap:Ethernet  HWaddr 96:ED:C9:9C:4C:7B
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

eth0      Link encap:Ethernet  HWaddr 1E:FB:5C:C2:E8:CF
          inet addr:192.168.192.129  Bcast:192.168.192.255  Mask:255.255.255.0
          inet6 addr: fe80::1cfb:5cff:fec2:e8cf/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:46896 errors:0 dropped:0 overruns:0 frame:0
          TX packets:55837 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:9829080 (9.3 MiB)  TX bytes:4721425 (4.5 MiB)

eth1      Link encap:Ethernet  HWaddr 96:ED:C9:9C:4C:7B
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:23461 errors:0 dropped:0 overruns:0 frame:0
          TX packets:23461 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1851584 (1.7 MiB)  TX bytes:1851584 (1.7 MiB)

If I restart the network, I get new random MAC's each time.

4

Three is an odd number. That 3 has to be replaced with a not odd number as I said in the post above. You can choose all the other numbers in a MAC at random any number from 0-F except the second digit where you have a 3.

5

Yes, I took that into account but was showing you the current output. I'll update that now and see what happens.

6

That's interesting. I never knew that about MAC addresses.
Looks like that's where I was going wrong as now it seems it's working.
Thanks so much for your input! I was really getting confused over this one.

# cat /etc/config/network

config interface 'loopback'
        option device 'lo'
        option proto 'static'
        option ipaddr '127.0.0.1'
        option netmask '255.0.0.0'

config globals 'globals'
        option ula_prefix 'fd00:ab:cd::/48'

config device
        option name 'eth0'
        option macaddr '92:4e:d9:cd:be:5c'

config interface 'wan'
        option device 'eth0'
        option proto 'dhcp'

config interface 'wan6'
        option device 'eth0'
        option proto 'dhcpv6'

config device
        option name 'br-lan'
        option type 'bridge'
        list ports 'eth1'

config device
        option name 'eth1'
        option macaddr '92:4e:d9:cd:be:5d'

config interface 'lan'
        option device 'br-lan'
        option proto 'dhcp'

# ifconfig
br-lan    Link encap:Ethernet  HWaddr 92:4E:D9:CD:BE:5D
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

eth0      Link encap:Ethernet  HWaddr 92:4E:D9:CD:BE:5C
          inet addr:192.168.192.126  Bcast:192.168.192.255  Mask:255.255.255.0
          inet6 addr: fe80::904e:d9ff:fecd:be5c/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1294 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1269 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:493661 (482.0 KiB)  TX bytes:121610 (118.7 KiB)

eth1      Link encap:Ethernet  HWaddr 92:4E:D9:CD:BE:5D
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:380 errors:0 dropped:0 overruns:0 frame:0
          TX packets:380 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:41916 (40.9 KiB)  TX bytes:41916 (40.9 KiB)
7

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