Ooma Telo does not respect DHCP’s DNS servers

[DominikHoffmann]

I had an issue, where my Ooma Telo VoIP device (to provide a landline of sorts) wasn’t connecting to its VoIP servers.

It turns out that, because I have outbound rules that block all outgoing connections on Port 53 (DNS) that don’t go to the OpenDNS servers, it couldn’t phone home. I put in an extra rule permitting all internet access coming from the specific IP address the Ooma Telo has on my network.

What a screwy way to configure your devices! They evidently hard-coded the DNS servers the device uses.

I put in this rule for my LAN interface, right below the anti-lockout rule:

Now it works again.