Using Bonjour, mDNS, or ZeroConf with CeroWrt

CeroWrt ships with the Avahi daemon enabled to act as a mDNS reflector. mDNS is an extension to the DNS concept that allows resources such as printers, file servers, web servers, iTunes, etc. to advertise a name along with a description, and of course, the machine’s IP address. You can browse your local network to see what resources are available, then configure your computer to use that resource. For example, CeroWrt advertises its SSH and Web services using mDNS/Bonjour.

CeroWrt’s default configuration does not to reflect mDNS requests out the ge00 (WAN) port. This is the proper configuration when CeroWrt is the primary router in a household. However, if you’re using CeroWrt as a secondary router, it is convenient to enable the mDNS reflector so you can access resources on your “regular” network.

The configuration is saved in the /etc/avahi/avahi-daemon.conf file. To allow the avahi-daemon to send queries into the ge00 network, ssh into the router, open /etc/avahi/avahi-daemon.conf in an editor, then find the deny-interfaces=ge00 line and comment it out by placing a “#” at the front, like this:


Then restart the avahi-daemon with this command:

/etc/init.d/avahi-daemon restart

mDNS resources on the ge00 port should now be visible and usable.

NB: These steps are included in the script at Automated Configuration of CeroWrt


To edit this page, submit a pull request to the Github repository.
RSS feed

Recent News & Articles

Sep 6, 2018 Wiki page
Pete Heist's Thoughts on ECN
Sep 5, 2018 Wiki page
Dave Taht's Stance on ECN
Sep 4, 2018 Wiki page
Jonathan Morton's Take on ECN
Sep 3, 2018 Wiki page
ECN-Sane Project
Aug 24, 2018 Wiki page
ECN-Sane Project

Find us elsewhere

Bufferbloat Mailing Lists
#bufferbloat on Twitter
Google+ group
Archived Bufferbloat pages from the Wayback Machine


Comcast Research Innovation Fund
Nlnet Foundation
Shuttleworth Foundation

Bufferbloat Related Projects

Congestion Control Blog
Lede Project (OpenWrt)
Flent Network Test Suite
The Cake shaper

Network Performance Related Resources

Jim Gettys' Blog - The chairman of the Fjord
Toke's Blog - Karlstad University's work on bloat
Voip Users Conference - Weekly Videoconference mostly about voip
Candelatech - A wifi testing company that "gets it".