MAAS won’t automatically set up routes on the machines where it’s running, so by default you won’t be able to reach the public MAAS address from inside a separate VLAN.
From your config I see 172.30.1.1 is the default gateway for that subnet, so you’ll need to manually add firewall rules to allow forwarding between the private and public subnet.
Alternatively, since MAAS listens on all IPs by default, you can use 172.30.1.1 as address to reach MAAS when bootstrapping Juju.
From your config I see 172.30.1.1 is the default gateway for that subnet, so you’ll need to manually add firewall rules to allow forwarding between the private and public subnet.
I forgot to mention the iptables rules to forward traffic from the private to public interface and vice versa (BTW, no more rules for debugging purpose). In addition, I can ping from the LXD Machine (subnet 172.10.1.6/24) to 8.8.8.8 and 192.168.100.185, but I cannot ping to 192.168.100.180 (the MAAS host).