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Comment Re:This is why you need redundancy and backups. (Score 1) 61

That depends on where you live and how much you are prepared to pay.

Afaict in most urban areas BT openreach "broadband" services top out at "up to 80Mbps" FTCC. In a few trial areas they have "up to 120Mbps" FTTC or "up to 330Mbps" FTTP.

There was supposed to be a product called FTTPoD which would allow people in FTTC areas to get FTTP if they paid a steep (usually thousands of pounds iirc) installation charge but new installations under that program have been suspended.

Virgin media are offering a 200Mbps cable package for home broadband customers and a 300Mbps cable package for buisness broadband customers.

If you move beyond the "broadband" products to the dedicated fiber products then it becomes a matter of how much you are prepared to pay.

Comment Re: Why do people think self driving cars will cat (Score 1) 622

Plenty of people in cities get by on public transport, and it's generally quicker in a lot of major cities.

That depends very much on when and where you are travelling. The practicality of public transport also depends on what you want to take with you.

If you live in the city center of a major city then public transport is good so you rarely need a car. Plus keeping a car in the city center is expensive. For these people Public transport takes the bulk and Taxis and/or car share services cover the minority of journeys where public transport is unsuitable. Obviously poorer people will have more of a bias towards public transport while richer people will be more likely to use the Taxi and car share services where conviniant.

Out in the suburbs public transport coverage is worse, car share services (at least where I live) are practically non-existant and the distances involved make taxi's an expensive option. For many people this shifts the balance towards owning a car. Especially for people who have already paid the upfront costs of starting to drive.

If/when self driving cars are able (both legally and technically) to operate unsupervised I would expect this balance to shift. The driver represents a large propotion of the operating costs of a taxi.

Comment Re:They still make Top Gear? (Score 1) 251

Clarkson got fired after hitting a producer effectively ending the series in progress. There was a farewell episode some time after the incident which IIRC used already-recorded location footage, studio footage with just Hammond and May.and a voiceover recorded by clarkson. Hammond and May also left the show out of solidarity with Clarkson. The trio went to Amazon where they have been working on a new car show (which has not been released yet so it's yet to be seen how succesful it will be).

Meanwhile the BBC who still own the "TOP Gear" trademarks, distribution contracts etc started casting up a new iteration of the show. The first series of this aired recently to dissapointing ratings.

Comment Re:rule changes (Score 1) 165

but no amount of computing power would give them the ability to change the rules (because cryptography).

That depends.

If you have more than half the hashing power then you can unilaterally make the rules tighter. Blocks contining transactions that do not satisfy your rules will not be used as a base to mine on by your miners and so will be quickly forked off. For example you could require a transaction fee of a minimum percentage of the transaction value or you could require that all bitcoin addresses were registered in a govrnment database.

On the other hand you cannot unilaterally make the rules looser without forking the network.

Comment Re:Meanwhile.... (Score 1) 397

My guess is that they are trying to catch people who intend to or have in the past worked illegally in the USA while pretending to be tourists. Some fraction of those people will be dumb enough to blab about it on social media and dumb enough to give details of said social media account to the border gaurds.

Comment Re:No deal (Score 1) 634

No really, the Romans build it, since those pesky Picts wanted their independence so badly. It's called Hadrian's wall and you can walk along it.

And if you had ever walked along it you would know in it's present state it's more of a ruin than an effective barrier wall. You would also know it doesn't line up with the modern England/Scotland border.

Comment Re:Has IPv6's reputation just been destroyed? (Score 1) 229

So you believe they're buying routers and switches that can't do ipv6, rather than that they simply haven't changed a config file to turn it on for the end user?

As I understand it reality is somewhere between those two extremes.

Afaict pushing out IPv6 consists of

1. Making sure the hardware and software in your network (including CPE if you provide it) *really* supports it, not just has a checkbox on the feature list for "IPv6" but can handle IPv6 with comparable features, performance and reliability to IPv4. Some hardware can have a long lifecycle so this can take a while.
2. Coming up with a plan for allocating addresses and distributing addresses to customers and routes to routers. Since NAT is strongly discouraged you need to have a system that hands out not just individual addresses but blocks and that tells your routers which customer has which block.
3. Training all your suppport and admin staff on IPv6.
4. Running limited trials to make sure you actually did 1-3 successfully and you can turn it on without breaking things and causing a massive support load.
5. Actually pushing it out.

That's doable but it's a fair bit of work. Until recently there was little motivation to do so. Now with IPv4 exhaustion actually upon us the ISPs are starting to take IPv6 more seriously.

Comment Re:Lemee get this straight... (Score 1) 202

My Diet Coke can't make it past airport security

The rule you are thinking of only applies to cabin baggage, not to hold baggage or cargo. If you had put your diet coke in your hold baggage it would have been perfectly acceptable.

but something named "Amazing Liquid Fire" can?

If it's in a cardboard shipping box they will probablly never see the name on the bottle. An x-ray may tell them there is some liquid in there but it's unlikely to tell them more than that.

Comment Re:Has IPv6's reputation just been destroyed? (Score 1) 229

To be fair I can understand why.

* NAT tends to fail closed, if the NAT rules aren't loaded then traffic simply doesn't get through. Tradtional firewalling can easilly fail open.
* Lack of NAT means potential attackers get clues about the layout of your internal network.
* NAT lets you manage the addressing on your internal network without being subserviant to an ISP (PI space does the same but getting PI space is quite a beuracratic process and if everyone got PI space we would have a routing table disaster on our hands)

Comment Re:Has IPv6's reputation just been destroyed? (Score 1) 229

On the weekend people use home and mobile networks more, during the week they use corporate networks more.

For mobile the client device (phone) connects directly to the ISP. So the ISP just has to turn on v6.
For home the client device connects to a home router. This device is usually supplied by the ISP and it's firmware can be updated to automate IPv6 rollout.
For corporate network the corps network admins need to understand IPv6, come up with a plan for deploying it and then actually deploy it.

A number of large home and mobile providers (comcast, T-mobile USA, sky UK, have been pushing out IPv6 by default over the past few years. Afaict there has been no similar push among corporate network admins.

Comment Re:IPv6 is a failed technology (Score 1) 112

Thus, a given /32 will be doled out only to a single RIR, who can break it up into smaller units to LIR's, to eventually be broken into /48, /64, and /56's for destination routers.

RIRs get allocated blocks much bigger than a /32 which they then split up into /32 (or sometimes larger) blocks to allocate to LIRs (LIRs are normally ISPs, hosting providers etc). The RIRs also allocate provider independent /48 blocks to end networks. Each of those LIRs and each of those networks with PI space will advertise it's addresses into the global routing table.

There were proposals for a more heirachical allocation and routing scheme but they never really worked out because the internet is NOT a heirachy. It's a collection of networks with constantly shifting relationships.

For many years you could not get IPv6 PI space. The proposal instead was that you ran multiple prefixes in paralell and relied on experimental DNS features (look up A6 and DNAME) to put the multiple addresses in DNS. End hosts would then have to decide which IP it was best to use to contact a given other end host even though end hosts normally have no clue about internet routing. As you can imagine that idea went down like a lead balloon. In the mid to late 2000s (afaict ARIN did it in 2006, APNIC in 2007 and RIPE in 2009) the RIRs relented and made provider independent IPv6 space available.

According to the site you linked the IPv6 routing table is currently about half the size of the IPv4 one. It will be interesting to see how big the IPv6 routing table ends up if/when the world completes the move to IPv6. On the one hand there will be less legacy crap and less need to make extra allocations because a network ran out of addresses. On the other hand since NAT is discouraged I would expect more companies to go for PI space.

Comment Re:IPv6 is a failed technology (Score 1) 112

Everybody should be using it, but nobody does.

Not nobody but certainly a lot less than is desirable.

This has been the steady state for what, 20 years?

Unfortunately people don't do stuff until there is real pressure to do so. As the IPv4 crunch has started to bite harder providers have started to take IPv6 more seriously. Theres still a long way to go but there has been a real increase in adoption over the past few years.

We probably should re-do the thing and skip to IPv9 with a less grandiose than this second system but a nice and functional third.

Yes the IPv6 proponents had some grandiose but half-baked ideas. To name a few Heirachical routing, abandonment of NAT, mandatory IPsec, site local addresses, A6 and DNAME, Stateless mac-address based autoconfiguration.

But yet another new system isn't going to help anyone, the problems can and have been solved while keeping the core protocol compatible.

The heirachical routing crap has already been dropped in favor of using the same routing methods as are used for IPv4. A6 and DNAME have been abandoned in favour of letting companies get PI space like they can for IPv4. NAT is still discouraged but there are implementations available for those who want/need it and protocols have been put in place to delegate prefixes to customer networks automatically. Mandatory ipsec has been abandoned. Site local addresses have been replaced by the far more sensible "unique local addresses" which acknowlage that "site" is an ill-defined concept. Mechanisms have been put in place that allow running a V6 only access network while still providing limited IPv4 functionality for clients (there are two competing options for this DS-Lite and NAT64) . We have privacy extensions to avoid MAC address based tracking with stateless autoconfiguration or alteratively you can use DHCPv6 instead.

Perhaps with a different crew this time. That'd be nice.

I think we already have a different crew, we now have people who work at real ISPs designing IPv6 soloutions that really work.

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