Local network bridge - with the same last octet - address mirror of LAN on ZT network

[Msprg]

Hello,

I’ve been attempting to make an RPi ZeroTier local LAN bridge work by following this guide, however, my devices were never added to the ZeroTier network.

I believe It’s an error on my side of configuration and I can’t seem to quite tackle the root of the problem. Apart from that, I also wanted to set addressing a bit differently than in the guide, however, it seems I’m not really up to the task.

I’d be happy if somebody would find time to check my configuration, and possibly even guide me a bit with setting it up as I want it to work.

pi@raspberrypi:~ $ ifconfig
br0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.0.115  netmask 255.255.255.0  broadcast 192.168.0.255
        inet6 fe80::30da:1bff:fe6e:d3ea  prefixlen 64  scopeid 0x20<link>
        ether 00:e0:4c:53:44:58  txqueuelen 1000  (Ethernet)
        RX packets 332152  bytes 82343830 (78.5 MiB)
        RX errors 0  dropped 61  overruns 0  frame 0
        TX packets 541728  bytes 128078311 (122.1 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        ether 00:e0:4c:53:44:58  txqueuelen 1000  (Ethernet)
        RX packets 459539  bytes 122343566 (116.6 MiB)
        RX errors 12  dropped 6  overruns 4  frame 15
        TX packets 541695  bytes 129547620 (123.5 MiB)
        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 113  bytes 9608 (9.3 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 113  bytes 9608 (9.3 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

zredacted2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 2800
        ether 56:2e:66:b5:cb:e8  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 111213  bytes 16272652 (15.5 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

pi@raspberrypi:~ $ tail -n+0 /etc/systemd/network/*
==> /etc/systemd/network/25-bridge-br0-en.network <==
[Match]
Name=eth0 # might be en*

[Network]
Bridge=br0

==> /etc/systemd/network/25-bridge-br0.network <==
[Match]
Name=br0

[Network]
DHCP=yes

==> /etc/systemd/network/25-bridge-br0-zt.network <==
[Match]
Name=zredacted2

[Network]
Bridge=br0

==> /etc/systemd/network/73-usb-net-by-mac.link <==

==> /etc/systemd/network/99-default.link <==

==> /etc/systemd/network/br0.netdev <==
[NetDev]
Name=br0
Kind=bridge

My desired configuration is:

My private network is 192.168.0.0/24. Addresses from .1 up to .99 are statically assigned - reserved for my servers and networking devices. The rest of the addressing space is dynamically assigned through DHCP.

I want to achieve the following: Have 192.168.192.0/24 ZeroTier network. That is - the same size, just with a different 3rd octet.

I’d like this ZeroTier network to mirror all of the LAN devices regarding the 4th octet. These devices should also be dynamically added/removed as they are on the private LAN.

So I’d like to access a device that has a .30 local address by 192.168.0.30 via physical LAN (while I’m home) and by 192.168.192.30 via ZeroTier network (from anywhere).

I hope it’s clear what I want to achieve, and I’d appreciate any sort of help.

Thanks~!