wifi connected Pis dropping avahi mDNS entries
Posted: Wed May 06, 2015 6:00 pm
I have 2 Pis using Edimax EW-7811UN 802.11b/g/n nano USB adapters. They connect fine to the house WLAN/LAN via wlan0 interfaces. They both use 2.2A high quality power supplies and the Edimax is the only USB device on the Pis' USB connector.
I also have 2 eth0 connected Pis.
I use avahi throughout to manage mDNS. It works mostly. No issues with the eth0 connected Pis. However, the wlan0 connected Pis initially register their local mDNS entries, but then over time (hours) their entries go stale and I can no longer ping them using their local names. I can ping and ssh to them via the IP address, so the wlan0 interfaces are still good. Their uptime indicates they have not spontaneously re-booted either.
If I then ssh into one of the wlan0 Pis, and do a sudo service avahi-daemon restart, they both reappear in the Avahi Zeroconf list and I can access them via their local names.
Anyone have ideas as to why this happens with wlan0 interfaces?
I also have 2 eth0 connected Pis.
I use avahi throughout to manage mDNS. It works mostly. No issues with the eth0 connected Pis. However, the wlan0 connected Pis initially register their local mDNS entries, but then over time (hours) their entries go stale and I can no longer ping them using their local names. I can ping and ssh to them via the IP address, so the wlan0 interfaces are still good. Their uptime indicates they have not spontaneously re-booted either.
If I then ssh into one of the wlan0 Pis, and do a sudo service avahi-daemon restart, they both reappear in the Avahi Zeroconf list and I can access them via their local names.
Anyone have ideas as to why this happens with wlan0 interfaces?