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story category Meanwhile, Comcast BitTorrent Throttling Continues...
As the press applauds a press release, Comcast buys some time...
(old news - 10:17AM Monday Mar 31 2008)
tags: bandwidth · cable · networking · Comcast
Tipped by funchords See Profile
Robb Topolski is the Broadband Reports user who discovered Comcast's packet-forgery traffic shaping nearly half a year before the Associated Press made the practice national news. He reminds us that while the company is getting plenty of hugs and kisses from the press for last week's announcement that they'll be changing their ways, nothing has actually changed yet. For whatever reason, Comcast says it will take the remainder of the year to cure themselves of their BitTorrent-crushing wickedness. Meanwhile, a new run of the same test used nearly a year ago finds that 63% of BitTorrent traffic (95 out of 150 established connections) are being disrupted (torn down using the RST flag) on the Comcast network.

Related:
  1. Comcast Begins Testing 'Protocol Agnostic' Network Management
  2. Comcast Confirms New Throttling Tests We Reported Yesterday
  3. Comcast To Deploy Femtocells
  4. Long Awaited Japanese Caps Arrive: 930GB Per Month
  5. Comcast, Cox, Trot Out Their Worst 'Bandwidth Hogs'
  6. Beating Comcast's Sandvine On Linux With Iptables
  7. Comcast Expands Switched Digital Video Trials
  8. Comcast Pays Florida $150K For Misleading Consumers
Forums » Meanwhile, Comcast BitTorrent Throttling Continues...
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CableTool
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MORE! MORE! MORE!

Id love if we can actually get a story a day about this. At this rate its only the same story reposted every OTHER day...
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Davebo_

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moderated:
March 31st, @10:27AM

Re: MORE! MORE! MORE!

said by CableTool See Profile :

Id love if we can actually get a story a day about this. At this rate its only the same story reposted every OTHER day...
How is this the same story? Comcast says they will stop throttling - now we find out they have not, and may not.
JSRoman
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edit:
March 31st, @10:30AM

Re: MORE! MORE! MORE!

said by Davebo_ See Profile :

said by CableTool See Profile :

Id love if we can actually get a story a day about this. At this rate its only the same story reposted every OTHER day...
How is this the same story? Comcast says they will stop throttling - now we find out they have not, and may not.
They said they would stop thottling BT protocol by end of year.
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espaeth
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Re: MORE! MORE! MORE!

Hey, someone who actually read the Comcast statement where they said they would become protocol agnostic in their bandwidth management in 9 months!

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Re: MORE! MORE! MORE!

said by espaeth See Profile :

Hey, someone who actually read the Comcast statement where they said they would become protocol agnostic in their bandwidth management in 9 months!
Yeah, that's a prompt response -- seeing as how the AP story that busted this wide-open was only 6 months ago.

If they were serious about fixing this, it wouldn't take 9 hours let alone 9 months.
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Re: MORE! MORE! MORE!

Re-read what Comcast posted. They didn't state they were going to stop managing their network, they stated they were going to be protocol agnostic in their management. (ie, pick on everyone, not just BT)

If they are implementing an interface into the provisioning system to accomplish this like we talked about a few threads ago, that kind of implementation would indeed take time.

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Re: MORE! MORE! MORE!

said by espaeth See Profile :

If they are implementing an interface into the provisioning system to accomplish this like we talked about a few threads ago, that kind of implementation would indeed take time.
Forging the RSTs is a wrongful act. After you get caught in "The Real World," you don't get to keep committing wrongful acts with impunity until you figure out what else to do.

Instead of RSTs, let's say Comcast's P2P throttling involved hitting the user in the head with a mallet (another wrongful act). Should they be allowed to continue doing that?

Nobody can license them to do what they're doing. Not BitTorrent, not PublicKnowledge, not the EFF, nobody. They must stop. They must disclose. They must accept responsibility for lying and under-delivering their service.

Take it offline right now -- today -- and I'll bet that they can figure out a Network Neutral solution before 9 months.
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Re: MORE! MORE! MORE!

said by funchords See Profile :

Forging the RSTs is a wrongful act. After you get caught in "The Real World," you don't get to keep committing wrongful acts with impunity until you figure out what else to do.
Forging RSTs is only about as wrong as cutting in line. It's not a very nice thing to do and it tends to annoy other people in the line, it may violate the social contract but there are no civil or criminal implications.

The RFC examples you love to quote refer to unintended consequences of RST injecting by firewalls on unknown header values. The Comcast deployment is a little more specific -- they know how P2P apps respond to TCP resets, it achieves the desired effect for them, and they appear to be taking reasonable measures to ensure that only their intended application target is affected. (not 100% obviously, but I'm sure they try to make it as close to perfect as possible)

said by funchords See Profile :

Nobody can license them to do what they're doing. Not BitTorrent, not PublicKnowledge, not the EFF, nobody. They must stop. They must disclose. They must accept responsibility for lying and under-delivering their service.
They need to get the ass clowns in marketing on board with the rest of the company. The folks that worked to craft the AUP seem to have a clue, and I'm sure there were more than a few "Uhh, guys..." comments that popped up with regards to the advertising.

said by funchords See Profile :

Take it offline right now -- today -- and I'll bet that they can figure out a Network Neutral solution before 9 months.
This "SHUT IT DOWN NOW" stance reminds me of the traffic meter study we did here in MN. Lots of people got annoyed with waiting on highway entrance ramps so they convinced the state senate to push the department of transportation into shutting down the meters. As ordered, MNDOT shut down the meters and conducted a survey for a few months. Traffic SUCKED. My normal commute to downtown went from pretty predictable 25 minutes to a range of 20-65 minutes, usually on the upper end of the scale. By the time the study was complete people were writing to the local papers, politicians, and MNDOT requesting the meters be turned back on. Study results were published here: »www.dot.state.mn.us/rampmeterstudy/

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Re: MORE! MORE! MORE!

said by espaeth See Profile :

Forging RSTs is only about as wrong as cutting in line. It's not a very nice thing to do and it tends to annoy other people in the line, it may violate the social contract but there are no civil or criminal implications.
That's true of all of the RFCs. Enforcement is essentially the missing part.

I'm on the record as saying that the FCC should limit its rulemaking to enforcement of existing rules, it shouldn't put itself into the position of duplicating, adding to, or changing Internet Standards.

But even better would be to restore wholesale competition to Broadband (the crap going on with Bell Canada now, not withstanding).

said by espaeth See Profile :

The RFC examples you love to quote refer to unintended consequences of RST injecting by firewalls on unknown header values. The Comcast deployment is a little more specific -- they know how P2P apps respond to TCP resets, it achieves the desired effect for them, and they appear to be taking reasonable measures to ensure that only their intended application target is affected. (not 100% obviously, but I'm sure they try to make it as close to perfect as possible)
I love to quote the RFCs (those that are the authoritative "Internet Standards") because that's the instruction manual for developers and implementors.

And Comcast didn't know how all P2P apps would respond -- all P2P apps haven't been written yet. And their secret addition to RFC 793 wouldn't give developers the heads up as to why their apps were behaving unexpectedly.

And even for the ones that are out there, they did not get it right. Remember that I found this after two months of investigation as to why I couldn't upload anything via Gnutella -- 24 hours a day, 7 days a week -- 100% blocked.

Their Sandvine "solution" doesn't delay uploads, it blocks them. Comcast's stretched definition of "delay" only works when there multiple copies of all pieces outside of the Comcast.net domain. Comcast, being the 2nd largest ISP in the US, repeatedly prevented a lot of original content from being uploaded. They didn't delay it, they blocked it.

And, once discovered, I couldn't even report the problem to anyone at Comcast because Customer Support (truthfully) did not know it existed on their network. My CS notes would probably say "customer sees UFOs and Black Helicopters - ID10T."
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Re: MORE! MORE! MORE!

said by funchords See Profile :

That's true of all of the RFCs. Enforcement is essentially the missing part.
Actually, for the worthwhile RFCs the enforcement is quite effective. "Do it this way or your shit won't work"

said by funchords See Profile :

I love to quote the RFCs (those that are the authoritative "Internet Standards") because that's the instruction manual for developers and implementors.
There are actually a couple Internet standards bodies: the Internet Engineering Task Force (IETF, who picks and chooses certain RFCs to become standards) and the IEEE being the two largest orgs. The difference between RFCs and IEEE standards is like the difference between books and scientific journals. To publish in a scientific journal you need a certain level of detail, research, and peer review whereas any jackass of the street can write a book.

I'm not knocking RFCs, there's a lot of brilliant ideas published in RFC form, but you have to take them for what they are. Many of the proposals are purposefully left open-ended for interpretation; that's why SHOULD vs MUST becomes a huge point of distinction in many RFCs.

said by funchords See Profile :

And Comcast didn't know how all P2P apps would respond -- all P2P apps haven't been written yet.
If the app doesn't exist, how would Sandvine profile it to be able to take action on it?

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Re: MORE! MORE! MORE!

Any jackass can write an RFC, but it won't make "Internet Standard" level until its been fully vetted.

If the app doesn't exist, how would Sandvine profile it to be able to take action on it?
Sandvine attacked the application protocol, so it recognized all BitTorrent applications. However, how one BitTorrent app responds to RST's resulting Winsock error code might be completely different than how another responds. Some apps might try and reestablish contact right away, others might mark the peer as "bad" and blacklist it.

Sandvine's method doesn't (and probably cannot) recognize which app is actually being used to generate the protocol it is attacking, so therefore it cannot predict what the app will do in response to the RST unless that behavior is also described in the protocol. And for BitTorrent, Gnutella, or ED2K, it is not. (I don't know about the others.)
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RARPSL

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said by espaeth See Profile :

I'm not knocking RFCs, there's a lot of brilliant ideas published in RFC form, but you have to take them for what they are.
And then there are the RFCs that are issued dated April 1 such as 1149 (A Standard for the transmission of IP datagrams on avian carriers) issued in 1990. This one was actually implemented experimentally a few years ago and even had an enhancement RFC issued a few years ago where the datagrams were tunneled via commercial air planes to speed the transmission time.

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said by funchords See Profile :

And even for the ones that are out there, they did not get it right. Remember that I found this after two months of investigation as to why I couldn't upload anything via Gnutella -- 24 hours a day, 7 days a week -- 100% blocked.

Their Sandvine "solution" doesn't delay uploads, it blocks them. Comcast's stretched definition of "delay" only works when there multiple copies of all pieces outside of the Comcast.net domain. Comcast, being the 2nd largest ISP in the US, repeatedly prevented a lot of original content from being uploaded. They didn't delay it, they blocked it.

I have seen what is most likely Sandvine equipment in
operation on Gnutella and WinMX, where it forces peer
connection resets as soon as someone enters my upload
queue. And sometimes I've seen these people keep trying,
maybe not knowing that they are disconnected in this
manner, thinking perhaps it is the person they are
downloading from that is disconnecting them.
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RadioDoc
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edit:
March 31st, @01:45PM

"Forging RSTs is only about as wrong as cutting in line. "

Since oversimplified examples have been introduced, I'll correct yours:

Forging RSTs is only about as wrong as pulling someone you don't like out of line, punching them in the face and telling them if you see them again you'll do it again.
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espaeth
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Re: MORE! MORE! MORE!

Do you also take it personally when cell towers become loaded and shrink their coverage area causing you to drop your call?

RadioDoc
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Re: MORE! MORE! MORE!

Take it personally? Are you sure you are replying the correct thread?
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espaeth
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Re: MORE! MORE! MORE!

I'm just saying you're taking the personification of a TCP RST a bit far.

RadioDoc
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Re: MORE! MORE! MORE!

Hardly. Just using the same silly reasoning you did.
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said by RadioDoc See Profile :

Forging RSTs is only about as wrong as pulling someone you don't like out of line, punching them in the face and telling them if you see them again you'll do it again.
No, allow me:

Forging RSTs is only about as wrong as pulling someone you don't like out of line, punching them in the face, and then blaming someone else for the assault.
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Re: MORE! MORE! MORE!

said by funchords See Profile :

Forging RSTs is only about as wrong as pulling someone you don't like out of line, punching them in the face, and then blaming someone else for the assault.
That sums it up rather nicely.
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said by funchords See Profile :

Forging the RSTs is a wrongful act. After you get caught in "The Real World," you don't get to keep committing wrongful acts with impunity until you figure out what else to do.
What exactly does "wrongful act" mean?

Is forging TCP RST packets illegal? Possibly, in the context of the FCC's current rules, but that's debatable (and rather unlikely, in my view). More likely, Comcast's methods are legal now, but they want to preempt any further regulation.

Is it inconvenient for some users? Definitely true, although as has been pointed out, there are a wide variety of alternatives out there to accomplish whatever task you want to accomplish (assuming that you care more about getting things done rather than particular means of accomplishing them).

In "The Real World", people do "wrongful" stuff all the time. I had someone cut me off while I was driving to work. Hell, the price I paid for the gas I used to get to work ought to be a crime. If I spent all my time throwing hissy fits on the internet over every way I was "wronged", I'd never get anything done.

Comcast has stated that the reason they started throttling P2P in the first place was to manage the network so that everyone could have a reasonably responsive experience. Now I know there are tons of conspiracy theories out there about other ulterior motives they may have, but the fact that only certain people in certain areas are getting throttled tends to make me think that network management truly is the reason for starting this in the first place.

Just "turning off" a major part of their network management without having some kind of alternate method in place really would be negligent.

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Re: MORE! MORE! MORE!

said by Corydon See Profile :

said by funchords See Profile :

Forging the RSTs is a wrongful act. After you get caught in "The Real World," you don't get to keep committing wrongful acts with impunity until you figure out what else to do.
What exactly does "wrongful act" mean?

Is forging TCP RST packets illegal? Possibly, in the context of the FCC's current rules, but that's debatable (and rather unlikely, in my view). More likely, Comcast's methods are legal now, but they want to preempt any further regulation.
...
In some states where Comcast operates, intercepting private data communicaions is criminally illegal (same thing is applied to hackers as well)
Grabbing your packets and FORGING RST's before passing the packets on sure seems like intercepting to me... Hence they ARE breaking the law in some places.
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Re: MORE! MORE! MORE!

said by pokesph See Profile :

In some states where Comcast operates, intercepting private data communicaions is criminally illegal (same thing is applied to hackers as well)
Grabbing your packets and FORGING RST's before passing the packets on sure seems like intercepting to me... Hence they ARE breaking the law in some places.
I'm not sure if the courts would buy your theory, after all, Comcast isn't interested in the content of your communications. Certainly I haven't heard of anyone bringing a lawsuit against them under this theory.

The outstanding class action lawsuits out there focus on breach of contract and false advertising, not intercepting private data communications. And frankly, I don't think those class action suits are going much of anywhere anyway, considering how the TOS is set up and how Comcast hasn't advertised its HSI service as "unlimited" AFAIK for at least the last few years. At best, the members of the class will get a month of service and a nifty keychain, the lawyers will get paid, and Comcast won't admit any liability.

But IANAL. You may be; if so, why aren't you pursuing this in court?

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Re: MORE! MORE! MORE!

said by Corydon See Profile :

I'm not sure if the courts would buy your theory, after all, Comcast isn't interested in the content of your communications.
Isn't that the hacker defense for kids that break into high-profile corporate or government systems? "I wasn't trying to read anything, I just wanted to see if I could break in!"
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Re: MORE! MORE! MORE!

said by funchords See Profile :

Isn't that the hacker defense for kids that break into high-profile corporate or government systems? "I wasn't trying to read anything, I just wanted to see if I could break in!"
Yeah, but hackers don't have nifty agreements like this:

However, Comcast and its suppliers reserve the right at any time to monitor bandwidth, usage, transmissions, and content in order to, among other things, operate the Service; identify violations of this Policy; and/or protect the network, the Service and Comcast users.

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Re: MORE! MORE! MORE!

said by espaeth See Profile :

said by funchords See Profile :

Isn't that the hacker defense for kids that break into high-profile corporate or government systems? "I wasn't trying to read anything, I just wanted to see if I could break in!"
Yeah, but hackers don't have nifty agreements like this:

However, Comcast and its suppliers reserve the right at any time to monitor bandwidth, usage, transmissions, and content in order to, among other things, operate the Service; identify violations of this Policy; and/or protect the network, the Service and Comcast users.
Yeah, agreed. Them clever hackers, them! :-P
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Re-Re-read what Comcast posted.

said by espaeth See Profile :

Re-read what Comcast posted. They didn't state they were going to stop managing their network, they stated they were going to be protocol agnostic in their management. (ie, pick on everyone, not just BT)
And here they defined agnostic as open and non-discriminatory.

""This new architecture would enable many new and emerging applications and will be based upon an open, non-discriminatory framework ... so we need to have an architecture that can support it with techniques that work over all networks," said (Tony) Werner. (Comcast Cable's Chief Technology Officer)"

Non-discriminatory means NO discrimination.
That means no prioritizing, throttling, packet forging, packet injection, or anything else.
Since you can not make an alteration to the network traffic streams without discrimination (ie:examination and evaluation), Comcast is promising to leave the network traffic fully unaltered.

To bring non-discrimination to practice would involve walking across the net-op center floor and powering off the Sandvine equipment.

Comcast says it may take up to 9 months to accomplish this.

So the Comcast Net-Op manager gets up from his chair. He takes one step. Then he takes another step. He breaths in. He breaths out. Skip 9 months. He reaches out with his right hand, index finger extended.... He depresses the button marked power... And the network upgrade is completed.

Hey Comcast customers. Is this what your service calls are like?

NV
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Re: Re-Re-read what Comcast posted.

said by Noah Vail See Profile :

Non-discriminatory means NO discrimination.
That means no prioritizing, throttling, packet forging, packet injection, or anything else.
Since you can not make an alteration to the network traffic streams without discrimination (ie:examination and evaluation), Comcast is promising to leave the network traffic fully unaltered.
Uhh.. no. Queue the Sesame Street "Some of these things are not like the others" music. Throttling and prioritization do not modify traffic, and will still very much be a part of any network's traffic management strategy. Per the press release:

"This means that we will have to rapidly reconfigure our network management systems, but the outcome will be a traffic management technique that is more appropriate for today's emerging Internet trends. We have been discussing this migration and its effects with leaders in the Internet community for the last several months, and we will refine, adjust, and publish the technique based upon feedback and initial trial results," said Tony Werner, Comcast Cable's Chief Technology Officer.
said by Noah Vail See Profile :

To bring non-discrimination to practice would involve walking across the net-op center floor and powering off the Sandvine equipment.
Just curious, in your world does the equipment room have a big switch labeled "Internet" that should always remain in the "ON" position?

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edit:
March 31st, @03:01PM

Re: Re-Re-read what Comcast posted.

Comcast should only prioritize according to approved "Internet Standard" RFCs. Any other behavior is not Network Neutral.

Back in the ...-.- day, the rule was "First In, First Out." No message, except for those of the government, would get precedence.

These days, we do have Standards that allow prioritization, but the en-route transit providers do not have carte blanche to prioritize them any way that they want to.

Edit: strikethrough my obviously overbroad statement

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Re: Re-Re-read what Comcast posted.

said by funchords See Profile :

Comcast should only prioritize according to approved "Internet Standard" RFCs. Any other behavior is not Network Neutral.
That's great, except there are no official standards on how applications should be prioritized.

Why yes

@verizon.net

said by espaeth See Profile :

Just curious, in your world does the equipment room have a big switch labeled "Internet" that should always remain in the "ON" position?
Why Yes it does! Have you seen it too?

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said by espaeth See Profile :

Uhh.. no. Queue the Sesame Street "Some of these things are not like the others" music.
Don't take this the wrong way,....
...but you're the only one who can hear the SS music.
I'm sure it's lovely.

said by espaeth See Profile :

Throttling and prioritization do not modify traffic, and will still very much be a part of any network's traffic management strategy.
I never spoke of modifying traffic. That was you, I'm somebody else. Perhaps the music is distracting you?

I spoke of Comcast's promise was to provide a non-discriminatory framework.
Which form of packet manipulation takes place without any packet examination and evaluation whatsoever?

said by espaeth See Profile :

"This means that we will have to rapidly reconfigure our network management systems, but the outcome will be a traffic management technique that is more appropriate for today's emerging Internet trends. We have been discussing this migration and its effects with leaders in the Internet community for the last several months, and we will refine, adjust, and publish the technique based upon feedback and initial trial results," said Tony Werner, Comcast Cable's Chief Technology Officer.
That's nice.

I notice he never addressed the specific network management techniques they are considering and what their goals are in respect to them. Of course, that would be information. The dissemination of which is not their strong point.

His white noise technospeak is very soothing, though. Needs some background music. Maybe some....

said by espaeth See Profile :

Just curious, in your world does the equipment room have a big switch labeled "Internet" that should always remain in the "ON" position?
That's just SOOOOOO cute! I can see you with Big Bird, in his "Big Room 'o Tubes". And there you are jumping up and down, dying to pull on the big foam rubber switchey thingey.

I'm sorry you mistook that for the Sandvine Policy Traffic Switch power breaker. Here, have a cookie; the music is starting up again for you.

NV
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edit:
March 31st, @02:03PM

said by Noah Vail See Profile :

Non-discriminatory means NO discrimination.
That means no prioritizing, throttling, packet forging, packet injection, or anything else.
Since you can not make an alteration to the network traffic streams without discrimination (ie:examination and evaluation), Comcast is promising to leave the network traffic fully unaltered.
Not really, no. Prioritization absolutely wouldn't be going away, and there's no reason it should be. They certainly aren't promising to leave traffic "fully unaltered". Really, all they've said is that they won't specifically target bittorrent/p2p - odds are they'll be stopping the questionable practice of forging reset packets.

said by Noah Vail See Profile :

To bring non-discrimination to practice would involve walking across the net-op center floor and powering off the Sandvine equipment.

Comcast says it may take up to 9 months to accomplish this.

So the Comcast Net-Op manager gets up from his chair. He takes one step. Then he takes another step. He breaths in. He breaths out. Skip 9 months. He reaches out with his right hand, index finger extended.... He depresses the button marked power... And the network upgrade is completed.
Network management still needs to be done. Are you familiar at all with Sandvine?.. or is all you know "SANDVINE = BAD!!". Yes, the torrent blocking is questionable, but there's a lot of other things that equipment does and can do. Look into it.