qBittorrent keeps changing the IP.

[Trackfinder]

I'm runing Windows 7 Ultimante fully updated and qBittorrent 3.3.4.

Before you tell me that's impossible, please let me tell you that this is happening for quite a while and I've tried several things before stating that.

Since three or four days ago, I've been noticing that after qBittorent has downloaded between 500Mb to 1.5Gb, transmission of data, it stops for a while and when it reappears is with another IP and the speed is sensibly slower.  Sometimes it happens three of four times in a row until it settles on a slower speed.  If I re-start my moden and computer, downloading goes nice for the first amount of data within the range I mentioned and then, the IP changes again.
Before I decided to write this thread, I tested on two other torrent clients with the same file (2.5Gb) and they downloaded nicely without problems while on qBittorent, it would change the IP at least two times.  I also tried to download a file of similar size through my browser and it also came down smoothly.
In the begining I thought it was my Internet provider interfering on my data traffic (I have a package with unlimited data traffic), but after all the tests I've done, I'm pretty sure that if there is a problem, it lies on some issue on qBittorrent. If I'm wrong, I'm ready to learn where the mistake is.
All the three torrent clients I've tested had the same configuration, which I've been using since a long time on the other torrent client I used to have and it worked fine with qBitorrent until a few days ago.

I have even re-installed qBittorrent again (3.3.4) but nothing has changed. I'm afraid of returning to an older version (3.3.3.) and mess everything up.

Below, there is a copy I've made of all the changes in the last two days from the execution log:

07/04/2016 14:15 - External IP: 191.250.34.129
07/04/2016 13:46 - External IP: 191.250.38.141
07/04/2016 13:02 - External IP: 177.17.207.35
07/04/2016 12:51 - External IP: 189.59.43.239
07/04/2016 12:35 - External IP: 189.59.32.131
07/04/2016 11:51 - External IP: 177.17.201.30
07/04/2016 11:37 - External IP: 191.250.33.76
07/04/2016 11:31 - External IP: 189.59.54.251
07/04/2016 11:19 - External IP: 201.22.173.21
07/04/2016 11:17 - External IP: 201.22.174.197
07/04/2016 11:03 - External IP: 177.41.93.94
07/04/2016 01:54 - External IP: 177.41.85.96
07/04/2016 03:48 - External IP: 189.59.36.98
07/04/2016 03:45 - External IP: 189.114.48.233
07/04/2016 03:37 - External IP: 177.41.93.163
07/04/2016 00:27 - External IP: 201.47.154.216
06/04/2016 18:07 - External IP: 177.41.91.215
06/04/2016 15:41 - External IP: 201.86.179.73
06/04/2016 12:16 - External IP: 191.250.33.162
06/04/2016 11:28 - External IP: 177.17.204.108
06/04/2016 11:03 - External IP: 191.250.33.2
06/04/2016 10:43 - External IP: 189.59.51.52
06/04/2016 10:19 - External IP: 189.114.50.236
06/04/2016 09:47 - External IP: 189.59.52.242
06/04/2016 07:06 - External IP: 201.22.169.17
06/04/2016 01:14 - External IP: 191.33.162.138
06/04/2016 00:05 - External IP: 177.41.90.98
06/04/2016 00:04 - External IP: 200.175.151.91
05/04/2016 23:38 - External IP: 177.17.205.163
05/04/2016 23:39 - External IP: 191.33.164.54
05/04/2016 22:27 - External IP: 201.22.172.8
05/04/2016 21:58 - External IP: 177.17.206.253
05/04/2016 21:49 - External IP: 186.213.225.232
05/04/2016 21:47 - External IP: 201.22.170.104
05/04/2016 21:44 - External IP: 201.86.182.178
05/04/2016 21:42 - External IP: 201.47.152.144
05/04/2016 21:27 - External IP: 189.59.53.216

If you need any more information, please let me know and I'll provide them as soon as possible.

One thing that keeps coming to my mind is an article I've read on Torrent Freak (https://torrentfreak.com/company-cracks ... whitelists) is that some companies have cracked the the Protocol Encryption and feeding the torrent clients with data that would slow down any download and even crash the program.  Do you know anything about that?
Could that possible be the problem I'm facing?

Before I migrated to qBittorrent I used another more popular torrent client, which started to show similar behaviour.  Because of the lack of help from their forums, I arrived at qBittorrent and found other features that I though more attractive, and I stuck to it.  I really would like to solve this problem.
One thing that I don't know if it's relevant or not, but both started showing problems after I arrived on the figure of 300 seeding torrents.

And if you don't mind, I have a two questions:

What causes qBittorrent to ban an IP during a session?

What do the letters on the FLAG mean (H E X I D U T P, etc.), and how are they settled?

Thank you for any help or enlightment you can provide on this issue.

[Trackfinder]

Thank you for your answer.

Maybe, I spelled my question wrongly.  On the Peers tab, one of the collums is called FLAG and each and every seeder/peer has a "Flag sequence" of letters that can be any of H, E, X, I, D, U, T, P and others in any combination. My question is what do they mean?

I feel that when a IP is banned is for a Good Cause, but I would like to know (if possible) these causes...

And finally, when the client changes the IP, I'm usually connected to lots of seeders/peers and I'm dowloading near to the limit of my capacity, and then, all of a sudden, the speed drops down to zero for one or two minutes and when it comes back, I have another IP and maximum a third of the seeders/peers I had before.
What caught my attention is that it only happens when the download speed is really high, and then it goes down.  And it only happens on qBittorrent.

[ciaobaby]

All those IPs that I checked are from one provider "Global Village Telecom" which I assume is your ISP, and changing so often is indicative that your connection keeps 'dropping' and reconnecting  and gets assigned a new IP.

That may be your router that is faulty, your telephone line is low quality or 'noisy', or your connection setting are to high and the router is 'chrashing' because of that.

What do the letters on the FLAG mean (H E X I D U T P, etc.), and how are they settled?

Put your mouse cursor over the field and those 'flags' are described

and generally;

* D = Currently downloading (interested and not choked)
* d = Your client wants to download, but peer doesn't want to send (interested and choked)
* U = Currently uploading (interested and not choked)
* u = Peer wants your client to upload, but your client doesn't want to (interested and choked)
* O = Optimistic unchoke
* S = Peer is snubbed
* I = Peer is an incoming connection
* K = Peer is unchoking your client, but your client is not interested
* ? = Your client unchoked the peer but the peer is not interested
* X = Peer was included in peerlists obtained through Peer Exchange (PEX)
* H = Peer was obtained through DHT.
* E = Peer is using Protocol Encryption (all traffic)
* e = Peer is using Protocol Encryption (handshake)
* L = Peer is local (discovered through network broadcast, or in reserved local IP ranges)

And

http://www.rasterbar.com/products/libto ... #peer-info

[Trackfinder]

Thanks a lot ciaobaby!!!

your connection setting are to high and the router is 'chrashing' because of that.

Does this "connection setting" mean the settings on qBittorrent or is it related to my moden? I don't use  a router, unless both words mean the same thing in IT talk.
This started happening not long ago and only when qBitorrent is running, and my landline doesn't seem noisy, so it can only be the moden/router or the settings.
Can you tell me how I can check and fix that, if this is within the scope of this forum?

Thanks again for your time and help.

[Trackfinder]

It does help a lot.  Thank you very much.
Knowledge is never a waste.
In my understanding, router was the device where you connected all your computers/apps to a server and moden where you got connected to the Internet.
Thank you very much again.

[ciaobaby]

In my understanding, router was the device where you connected all your computers/apps to a server and moden where you got connected to the Internet.

The equipment that your ISP 'gave' you is both a MODEM and a Router, that are "close coupled" and put in a single box. They should be referred to as a router/modem, but are generally called 'routers' by ISPs.

The  MODEM part is the bit that connects to your phone line and does the modulation - demodulation of the analogue signals that are transmitted as 'tones' over the telephone line. "dial-up" has not gone away ADSL/DSL is still 'dial-up' that just got sped up by using the additional bandwidth ranges that 'voice calls' cannot use as it is below and above the range of human speech and hearing.

The 'router' part is where you plug in your Ethernet cables and if your device also has built in  "Wireless capabilities" this is a second router system

Does this "connection setting" mean the settings on qBittorrent or is it related to my modem,

In qBittorrent, most ISP provided router/modems are very much low-end, lowest price equipment so do have problems with the amount of remote connections BitTorrent protocol client make. Do a forum search for 'router/modem'  (without quotes) there are several threads discussing this kind of problem and how to go about testing and determining what settings are 'optimal' for your system.

[Trackfinder]

Thank you very much.
I'll do the search and see what I can get out of it.
Let's hope I can find a solution.
Thanks again

[ciaobaby]

I am going to politely disagree with the statement that ADSL and DSL are dial up.

and you would be wrong.
For the purposes of the average bittorrent client user they ARE the same, the actual differences are far above what the average user needs to know in order to use them, in the same way that  you don't need to know that your 'land-line' telephone "rings" because it is getting a ~70v DC square wave pulse instead of a unmodulated sound wave.

They use EXACTLY the same technology to communicate ie: a telephone line, and telephone lines have not changed since the introduction of DSL, the only significant difference between "dial-up" and DSL is that "dial-up", just like  "FAX" machines, uses the same part of the spectrum as voice calls do,  whereas DSL uses the parts of the spectrum above and below the audible range. This is why DSL modems require a "band pass" filter between the incoming line socket and the DSL modem/router, the function of the "filter" it to isolate the voice bandwidth from the DSL.

This is why with dial-up and FAX you can 'hear' the "beeps and squeaks" of the communication ( https://www.youtube.com/watch?v=gsNaR6FRuO0 ) because they are inside the 'audible' range of human hearing, DSL is in the range that bats or dogs can 'hear'.

[ciaobaby]

Since DSL uses a Square wave and is specifically a a DIGITAL network, 

Nope, [A]DSL is ANALOGUE transmitted as 'tones', if DSL WAS digital the distance between an exchange and the final terminator would NOT degrade the signal as it does with basic DSL.

CABLE [broadband] connections running over co-axial or fibre-optic connections are end to end  digital, as are the main trunk lines where local exchanges connect your analogue telephone line to the Internet 'backbone' via device called a DSLAM.

I think you maybe confusing basic analogue telephone lines with ISDN telephone lines which are digital from end to end, and employ DAC / ADC conversion to allow speech to be transmitted.

[KitKat]

The "digital" in DSL is another misnomer/meaning changed due to age.
It merely refers to the user of the PTSN having access to a "digital service" aka "the internet"
Which you had to pay an exhorbitant subscription fee for back in the day. (Hence the name.. Digital Subscription Line)
Both signals are analogue, just different frequencies.
ADSL & ADSL2 are superior implementations of the base technique.

/e: typos lel.

[ciaobaby]

All you needed to know about telephone lines, .... ... But were afraid to ask.

[ciaobaby]

I have a Bachelors of Science in Data Networking and Telecommunications. I have designed data networks for Cisco, Boeing, Northrup Grumman, to mention a few. So, what I say comes from my education.

So why are you asking WHY a piece of software that simply uses whatever network connection that you make to the host computer is changing the IP??????????????????????/

If what you have provided is true you MUST ALREADY KNOW that qbittorrent is NOT responsible for connecting to your ISP and changing the IP that is provided by a remote DHCP server that is operated by your ISP which NO SOFTWARE RUNNING ON YOUR LAN can affect.