I received a DMCA notice stating that BitTorrent packets with an IPv4 destination address of were being received by my home WIFI router even though its IPv4 address at the time (according to the ISP, CenturyLink) hadn't changed from The session was initiated on the LAN side of the router by an app.

Here's the relevant information from the DMCA notice that my ISP forwarded to me:

Title:        Jurassic World
Timestamp:    2024-05-03T07:54:10Z
IP Address:
Port:         52382
Type:         BitTorrent
Torrent Hash: 80f13a4d3faed8a13a74f7f3b71e5e43ca5073cf
Filename:     Jurassic.World.2015.1080p.Rifftrax.6ch.2ch
Filesize:     2617 MB

The boilerplate in the notice refers to the above IP address this way:

We have become aware that an individual has utilized the IP address at the recorded date and time below to download, host, and/or facilitate the downloading and/or streaming of video content that is exclusively owned by NBCUniversal.

How is this possible? How can an app on the LAN side cause reception of packets with the wrong destination address?

(Aside: The DMCA issue has been handled.)

  • 1
    It could be a few things. Wrong date/time on their end, they tracked it differently with multiple ip addresses and just screwed up telling you which ip address it was, or it is an imposter trying you to click a link to install malware/etc.
    – LPChip
    Commented May 7 at 21:55
  • 1
    Some DOCSIS ISPs have a thing where your home router can publish an extra "guest" SSID like "CableWiFi" or "[ISPName]wifi" that any customer of that ISP can join if they are in range of any other participating customer's premises. The traffic doesn't count against your Mbps speed limit or monthly data caps and the traffic is completely separate from your home network. I wouldn't be surprised if such a network used a completely different subnet.
    – Spiff
    Commented May 8 at 2:25
  • 2
    Are you sure the statement was that your router was receiving packets? Not sending them? The exact wording could be important here.
    – Daniel B
    Commented May 8 at 5:03
  • I've added details from the DMCA notice. Commented May 8 at 15:44
  • I'm not positive that the IP address in the DMCA notice was the destination address of incoming packets. I'm assuming it was because all the other addresses (incoming source, outgoing source and destination) would be useless for identifying my router/modem. Commented May 8 at 15:52

1 Answer 1


You haven't stated how you got the DMCA notice, nor how they told you that "my home WiFi router" was involved.

For example, if someone else is using your account and is doing something wrong, it's "your account" that's involved, not your "home WiFi router". In that case, the infringing IP address would tell you where "your account" was being abused.

In other cases, Network Address Translation may be translating your IP address even though your "WiFi router" thinks it has a fixed IP address.

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