Two months ago, my Netgear router logs began to include intermittent entries that said, "Attempt to release incorrect UDP nat port from SELF." More and more of these entries began to show up. Currently, the log containts mostly these entries. There are other anomaly entries as well, such as,"DNS lookup failed, force renew!""Invalid sequence number received with Reset, dropping packet Src 80 Dst 52115 from WAN""Unable to free TCP NAT port for a000008:52000 from LAN"Does anyone know what they mean or what causes them? The routern is ProSafe FVS 318.

Hi race, Welcome to the community! I see you are having some issues with the FVS318, let me see if I can help you out. The first entry is an event log, this is I would say common. For the other entries, it appears like the router seemed to be dropping traffic (valid or invalid). I would like to know what firmware version you have loaded on the firewall. What are the changes you made on the network before experiencing these logs? We'll look forward to your response. Thanks,

Hi, JohnRo! Thank you for helping me. The firmware is v3.0_22. I made no changes. It just started happening. The logs from six months ago had none of these entries. Race

Hello race, My suggestion is to update your firmware to the latest, we have to make sure that the errors you are getting are not coming from the bugs on older firmware versions. You can donwload the firmwares on this link, you are 5 (five) firmwares behind you need to upload incrementally. Hope it helps. Thanks,

This is BAD advice. Do NOT upgrade your firmware as a solution. Since nothing has changed on the netgear, what else may have changed? Is your isp doing upgrades, speed increases, backbone changes? Did they change the modem they provide you? Any other network configuraiton changes?

Okay, I'll wait to do the firmware upgrades. The ISP (Comcast) has apparently been doing numerous network upgrades in the area of many kinds over the past year. That is according to a Comcast tech. Is it clear to anyone specifically what these error messages mean? When I look at the router diagnostics page (or LAN setup page, I don't remember exactly which at the moment), it look like the WAN address is 10.0.0.1, which seems to be wrong. Race

Attempt to release incorrect UDP nat port from SELF

26 Replies

JohnRo
NETGEAR Employee Retired
Oct 06, 2015
Hi race,

Welcome to the community!

I see you are having some issues with the FVS318, let me see if I can help you out. The first entry is an event log, this is I would say common. For the other entries, it appears like the router seemed to be dropping traffic (valid or invalid). I would like to know what firmware version you have loaded on the firewall. What are the changes you made on the network before experiencing these logs?

We'll look forward to your response.

Thanks,
- race
  Aspirant
  Oct 06, 2015
  Hi, JohnRo!
  
  Thank you for helping me.
  
  The firmware is v3.0_22.
  
  I made no changes. It just started happening. The logs from six months ago had none of these entries.
  
  Race
  - JohnRo
    NETGEAR Employee Retired
    Oct 07, 2015
    Hello race,
    
    My suggestion is to update your firmware to the latest, we have to make sure that the errors you are getting are not coming from the bugs on older firmware versions. You can donwload the firmwares on this link, you are 5 (five) firmwares behind you need to upload incrementally.
    
    Hope it helps.
    
    Thanks,
SamirD
Prodigy
Oct 19, 2015
The proof to comcast is as simple as this: find out your puclic ip from a website, check the netgear wan ip. When they do not match, send them screenshots.

The netgear should have the public ip address at all times if everthing is working correctly.
- race
  Aspirant
  Oct 27, 2015
  I showed the screen shots to the Comcast tech, and they had several other explanations that I have disqualified but I must investigate with documentation so that I can prove this. These explanations include the modem firewall settings, the modem bridge settings, etc.
  
  I'll report back in a few days.

Forum Discussion

Attempt to release incorrect UDP nat port from SELF

26 Replies

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