Recently, I’ve been using a GL.iNet Beryl travel router for my home network. I purchased it for a road trip, then liked it well enough to continue using it as my primary home router.
I use its guest network feature for my IoT devices, to keep them segregated from my main LAN (I also use it as my only 2.4 GHz network, since I don’t really trust band steering). This works well enough, but comes at a cost: mDNS broadcasts from devices on the guest network don’t reach devices on the LAN. In particular, I have a Brother laser that I’d like to be able to use with AirPrint from the LAN.
I didn’t find much on the Internet on how to set this up, so I decided to write it up.
Step 1: Install avahi-dbus-daemon
Open the router admin interface. Navigate to Applications > Plug-ins. Search for and install avahi-dbus-daemon (note there are many results for avahi in the default repos, but you only need avahi-dbus-daemon):
Step 2: Configure Avahi
SSH into the router (using username root and the same password you use to sign into the web interface). Edit /etc/avahi/avahi-daemon.conf. It should be pre-populated with some default settings. Find and change enable-reflector=no to yes. Finally, restart the daemon with /etc/init.d/avahi-daemon restart
Step 3: Test!
This was all I needed to get things working. Printing from my iPhone to an AirPrint printer on the guest network began working immediately.