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Forum Discussion

StCJM's avatar
StCJM
Aspirant
Jan 26, 2020

DDNS requests - DDNS sends a request every 3 seconds

Orbi RBR50 v2.5.1.8   DDNS (No-IP) is sending an update back to the mothership every ~3 seconds.  An analysis of DNS traffic shows a majority of all traffic for the router is going to ipcast1.dynup...
FURRYe38's avatar
FURRYe38
Guru - Experienced User
Jan 27, 2020

Something to contact a forum moderator about and see if they can relay this to NG engineering to see if this is by design or can be adjusted.

 

Blanca_O 

ErnestTheGreat 

  • CrimpOn's avatar
    CrimpOn
    Guru - Experienced User
    Jan 27, 2020

    An update: Pulled the USB stick this morning after collecting more than 15 hours of WAN traffic.  I concur that Orbi appears to be far too busy talking to dynupdate.no-ip.com.  Every time Orbi asks, "What is my IP?", that involves a whole sequence of DNS queries (where is no-ip.com?) TCP connects/acks, and finally the http "get" and the response.  My understanding was that Orbi was acting as a DNS server and caching IP addresses, so I do not understand this part at all.  Then, at intervals of an hour or half-hour, Orbi uses http to get the entire parameter set from no-ip.com.  That includes the email address associated with the account and all of the host names that are registered with no-ip.com on my account (Wow. Had not expected that.)  What I did not see in all of this was any move on the part of Orbi to update the no-ip.com database.  This makes sense as my IP address has not changed in months.

     

    Will be interesting to learn if making changes on the no-ip side have any effect.

     

    p.s. Invest in a 32GB USB stick and you can learn far more than you wanted to about what is going on in the network the Orbi is connected to.  A lot of packets flying around that make little sense.  And a lot of connections from inside my network to places I have never thought of.