ASUS RT-BE88U (Merlin) - problem with mDNS reflector

[Caspi]

Hi,
I’m trying to get mDNS/Chromecast discovery working across two LANs on an ASUS RT-BE88U running ASUSWRT-Merlin (3006.102.5).
The goal is:

• LAN (br0) → 192.168.8.0 - main network
• IoT isolated VLAN (br56) → 192.168.52.0

The IoT network was created from the Network menu. I tried it twice: once using the Customized Network option and once using the IoT Network option. In both attempts, I set AP Isolation to false and Access Intranet to Main Network.

Then I set up Avahi reflector by creating /jffs/configs/avahi-daemon.conf.add with below code

[server]
allow-interfaces=br0,br56

[reflector]
enable-reflector=yes

In logs now I can observer

Jan  1 01:01:07 custom_config: Appending content of /jffs/configs/avahi-daemon.conf.add.
Jan  1 01:01:07 Let's_Encrypt: Err, internet disconnected.
Jan  1 01:01:07 avahi-daemon[3810]: Found user 'nobody' (UID 65534) and group 'nobody' (GID 65534).
Jan  1 01:01:07 avahi-daemon[3810]: Successfully dropped root privileges.
Jan  1 01:01:07 avahi-daemon[3810]: avahi-daemon 0.8 starting up.
Jan  1 01:01:07 avahi-daemon[3810]: Loading service file /tmp/avahi/services/alexa.service.
Jan  1 01:01:07 avahi-daemon[3810]: Loading new alias name RT-BE88U.
Jan  1 01:01:07 avahi-daemon[3810]: Joining mDNS multicast group on interface br56.IPv4 with address 192.168.52.1.
Jan  1 01:01:07 avahi-daemon[3810]: New relevant interface br56.IPv4 for mDNS.
Jan  1 01:01:07 avahi-daemon[3810]: Joining mDNS multicast group on interface br0.IPv4 with address 192.168.8.7.
Jan  1 01:01:07 avahi-daemon[3810]: New relevant interface br0.IPv4 for mDNS.
Jan  1 01:01:07 avahi-daemon[3810]: Network interface enumeration completed.
Jan  1 01:01:07 avahi-daemon[3810]: Registering new address record for 192.168.52.1 on br56.IPv4.
Jan  1 01:01:07 avahi-daemon[3810]: Registering new address record for 192.168.8.7 on br0.IPv4.

Despite the steps I’ve taken, from the 192.168.8.1 network I still can’t see the Chromecast device that’s on the 192.168.52.1 network.
Do you have any ideas on what else I need to do?

 

[jksmurf]

I recently redid my Avahi reflector and Google TV setup, so it’s fresh in my memory.

I believe you need IPTABLES configured in firewall-start to complete it. @bennor posted some excellent examples here:

Trying to understand Guest Network Pro limitations

Using an AX-86U Pro on FW 3006.102.4_beta1, I'm experimenting with Guest Network Pro and VLANs and I must be missing something. I've created a VLAN (tagged as 3) and set ethernet port 3 as an access port tagged with that VLAN. I've then created a new guest network with that same VLAN, turned on...

www.snbforums.com

In that same thread, see also my post where I configure my system for a Google TV:

My Query

Trying to understand Guest Network Pro limitations

For what ever reason the Guest Network Pro on my RT-AX86U Pro gets wonky if I've added and removed a bunch of Guest Network Pro Profiles. Sometimes it doesn't show all the available settings or options in newly added Profiles. Typically what I've had to do is remove all the Profiles, reboot the...

www.snbforums.com

My Succesful Trial thanks to @bennor

Trying to understand Guest Network Pro limitations

For what ever reason the Guest Network Pro on my RT-AX86U Pro gets wonky if I've added and removed a bunch of Guest Network Pro Profiles. Sometimes it doesn't show all the available settings or options in newly added Profiles. Typically what I've had to do is remove all the Profiles, reboot the...

www.snbforums.com