One final thought is that many, perhaps most "can I have a new IP address?" requests are from gamers, all of whom swear on their mother's life that they are being DOS'd by unknown miscreants, yet they themselves have done nothing to bring this upon themselves, and oh no, sir, not me, I am a poor waif harshly treated by this gaming world, I have bad mouthed no one, nor done anything at all that might make me a target. Which may be true, but is generally unconvincing. Why would somebody bother to DOS a random IP address for no reason?
Obviously I can't say this applies to you, and if it doesn't you can ignore all of this, although see comments below on VPN. If on the other hand there's a grain of substance in this, changing your IP address via modem mode or a VM IP reallocation is only a short term fix, because as soon as the OP is back online doing what they were doing, the new IP will be as sticky and difficult to change as before, and there's a very good chance they'll attract the same attention again. Unless they can (a) work out what might have been the provocation, and possibly (b) adopting a new gaming pseudonym, or even changing the games or servers they play on.
There is a possible solution to stop a current attacks, and that's leaving the hub off for 24 hours - some DOS attacks will give up if they're detecting nothing on the receiving end in that timescale. Or building on @DJ_Shadow1966 's comments, working out when your hub's DHCP IP lease expires, making sure it is switched off at that time, and praying that when you turn it back on you get a "fresh" IP. But that's clutching at straws. For a longer term solution that really solves the issue for goof, you can pay for a gaming-grade VPN service. A long term VPN contract prices vary from £3 to £7 a month. Adds a few ms to your ping, but not sufficient to worry a skilled gamer, and completely stops DOS or other IP based hassle instantly. And the VPN solution also works for any other non-gaming reasons you might legitimately wish to obscure your IP. Free VPN services won't help you (eg built into certain browsers), because in addition to severe security concerns, all the ones I've played with are very slow.
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