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  • What type of Internet connection do you have (DSL, cable, fiber,...)?
    – Robert
    Commented Jun 11, 2021 at 21:04
  • I do not know what DSL is, but until 2 weeks ago I had a copper link. Then some workers came and changed it to fiber, but my subscription speed is limited to 100 Mb/s anyway. My internet began to drop before those guys changed my cables to fiber though.
    – Alexandra
    Commented Jun 11, 2021 at 21:12
  • Is it possible to connect a computer to the ISP modem (Ethernet Port) and try testing again. It seems to me that you have sufficient information to contact the ISP and ask them to fix the issue.
    – anon
    Commented Jun 11, 2021 at 21:16
  • Hmm, I can only plug the internet cable into the router, then I could put another cable between router and a device. I cannot plug the internet cable directly into a device because the ISP is giving me internet based on MAC address somehow. But I tested with cable from router to my Smart TV and internet drops too. What it is still not clear to me is if the delay for dhcp ACK causes dead internet though.
    – Alexandra
    Commented Jun 11, 2021 at 21:27
  • 1
    I would contact the ISP. You should be able to put your own router at the ISP modem and then connect from there. Ask them about this and also why the irregular internet.
    – anon
    Commented Jun 11, 2021 at 21:31