operating-system: HA not accessible on one NIC when connected to multiple

Describe the issue you are experiencing

Today my HA setup was unavailable when I woke up and when I did some searching I saw it was caused by my setup having two network interfaces. I have an interface for my main network 192.168.1.1/24 and another interface for my IoT devices. Both interfaces connected to the same HA. Both also have internet access. When I disconnected the IoT interface (192.168.20.1/24) I was able again to contact the HA setup on my main network.

As part of the debug proces i’ve changed from DHCP to Static IP on both interfaces and this seems to solve the problem. Now HA is accessable via both interfaces once again.

What operating system image do you use?

ova (for Virtual Machines)

What version of Home Assistant Operating System is installed?

8.5

Did you upgrade the Operating System.

Yes

Steps to reproduce the issue

1. Connect both network interfaces.
2. Configure interface in HA as DHCP
3. Reboot system

HA is only accessible on the IoT interface

1. Disconnect the Iot Interface

HA is only accessible on the Main interface

Anything in the Supervisor logs that might be useful for us?

Not seeing anything

Anything in the Host logs that might be useful for us?

Not seeing anything

System Health information

Home Assistant 2022.8.7 Supervisor 2022.08.5 Operating System 8.5 Frontend-versie: 20220802.0 - latest

Additional information

Only today it stopped working. In the previous months I rebooted several times without any problem.