mjhjmtu

I'm working with Raspberry Pi Zeros on a subnet. I bought external Ethernet adapters for each one to connect them to one another. Unfortunately, these ethernet adapters all came with the exact same MAC addresses, making communication between the Pis near impossible.

Because of that I've tried forcing a change to the MAC addresses by editing /etc/systemd/network/00-default.link in each Pi Zero in accordance with the steps outlined in this post. Ultimately, I used the following code:

[Match]
MACAddress=00:e0:4c:53:44:58

[Link]
MACAddress=10:00:00:00:00:11

Note that I used a different new MAC address for each Pi

Unfortunately, after restarting all of my Pi Zeros, none of the MAC addresses updated to the new assigned values. When I check with ifconfig they all had remained the same original values. What am I doing wrong?

Additional info:

ip neighbor show yields the following result:

pi@raspberrypi:~ $ ip neighbor show
192.168.2.37 dev wlan0 lladdr ac:bc:32:87:93:39 DELAY
192.168.3.12 dev enxb827eb9c0ecf lladdr 00:e0:4c:53:44:58 STALE
192.168.3.10 dev enxb827eb9c0ecf lladdr 00:e0:4c:53:44:58 STALE
192.168.3.11 dev enxb827eb9c0ecf lladdr 00:e0:4c:53:44:58 STALE
192.168.2.1 dev wlan0 lladdr 40:c7:29:4e:4d:f8 STALE

ifconfig shows:

eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
 inet 192.168.3.12 netmask 255.255.255.0 broadcast 192.168.3.255
 inet6 fe80::4db4:2630:6df9:2aeb prefixlen 64 scopeid 0x20<link>
 ether 00:e0:4c:53:44:58 txqueuelen 1000 (Ethernet)
 RX packets 144 bytes 11482 (11.2 KiB)
 RX errors 1 dropped 0 overruns 0 frame 0
 TX packets 133 bytes 17886 (17.4 KiB)
 TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
 inet 127.0.0.1 netmask 255.0.0.0
 inet6 ::1 prefixlen 128 scopeid 0x10<host>
 loop txqueuelen 1000 (Local Loopback)
 RX packets 0 bytes 0 (0.0 B)
 RX errors 0 dropped 0 overruns 0 frame 0
 TX packets 0 bytes 0 (0.0 B)
 TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

I also cannot sudo ifdown eth0 - it yields the error: ifdown: unknown interface eth0 Then when I check cat /run/network/ifstate, eth0 is not listed. The contents is only:

lo=lo

I've also set a static IP in /etc/dhcpcd.conf like so:

interface eth0
static ip_address=192.168.3.12

I'm starting to think that this issue is being caused by the naming difference between the interface name eth0 shown when calling ifconfig and enxb827eb9c0ecf shown when calling ip neighbor show from another computer. I only have 1 network interface so having multiple names doesn't make sense to me.