Hello,
I am using Home Assistant Supervisor and would like to create some routing rules on the Debian system to, for example, route multicast traffic from Home Assistant over a virtual TAP interface. This is not directly possible within Home Assistant, so I need to rely on the underlying Debian system.
Home Assistant creates its own Docker network (hassio), which contains the Home Assistant container, the supervisor, add-ons, and basically everything related to Home Assistant.
I could assume that all traffic from Home Assistant comes from this Docker network that Home Assistant has created, but within Home Assistant, under Settings > System > Network, there is a setting where the IPv4 address of the selected network interface is displayed.
This would suggest that Home Assistant is aware of the interface and its IP address, even though it runs isolated within its own network.
If Home Assistant is isolated in its own network, it shouldn’t normally be aware of the host interface (enp0s6). However, does the Supervisor, which also runs partly on the host as OS agents, provide this information to Home Assistant?
This setting under the network adapter likely directs Home Assistant’s multicast traffic (in my case, enp0s6) and possibly unicast traffic as well?
Could someone help clarify this for me? Thank you in advance for your help.