Take a look at Hurricane Electric, they offer free tunnel, dns hosting, etc.
[...] You can be up and running on an IPv6 tunnel from anywhere in 30 seconds!
Hurricane Electric is great, but note this item in their FAQ:
I've tried to create a tunnel but did not succeed. Is there a basic guideline on how to set up a tunnel?
[...]
*Two important notes:
Your IPv4 endpoint address must be reachable via ICMP (Internet Control Message Protocol).
If you are using a NAT (Network Address Translation) appliance, please make sure it allows and forwards protocol 41.
That's protocol 41, not port, and support for any non-garden-variety protocol in the cheaper routers/APs is notably spotty. Who knows what POS you're going to end behind at your next hotel?
There's no math field work, where you need immediate mobility anymore. There's no need for a graphing calculator, which must not be used during exams.
There still are niches where a powerful calculator is desirable for field work. Surveying is one -- search for "hp-50g surveying" to see for yourself. Yes, there are specialized data collectors, usually running WinCE (shudder), but a suitably outfitted HP-50g is a very worthwhile alternative.
Doing a reverse lookup for every goddamn IP I ever see would be completely impractical.
Hyperbole much? Recognizing IPv6 addresses is not that different from recognizing IPv4 ones, especially if you assign local parts manually, which you should do for the servers instead of relying on autoconfiguration, for reasons which should be obvious. So, 2001:db8:0:1001::4 is...?
2001:db8::/32 is your organization's prefix. You're supposed to know it by heart.
0:1001 is, say, Accounting. You know your network's addressing plan, right?
::4 is their print server.
With a bit of practice, parsing the IPv6 addresses you deal with frequently will become second nature. If it doesn't, then maybe you're not such a hot network admin.
That's what the nuclear-capable nations' militaries hoped for, but it didn't turn out that way. As already stated in a number of posts above (and argued in TFA), the distinction between tactical and strategic nukes is very difficult to make. Nuclear weapons are simply too powerful (and too dirty, regardless of the size) to be useful in a tactical setting.
One party which seems to have recently realized this is, wonder of wonders, North Korea. There are strong indications that their designed yield was about 4 kT. A piddly tac nuke, right? Well, as mentioned in the discussion after the referenced article, imagine those 4 kT going off in the heart of Seoul or Tokyo...
North Korea had just signed a agreement not to test weapons – which specifically included not testing long range missiles for “scientific purposes” in exchange for food aid.
They didn't sign anything -- see this article. Missile launch ban is the consequence of the UNSC Resolution 1874, adopted after the North's second nuclear test. I don't think that the North is irrational -- just quite determined to preserve the regime and prepared to play provocative moves to that end.
Please... Try to make gapless MP3 playback work. Or if it's the fault of the underlying engine, file bugs against it; you are better positioned to understand the issues.
<semi-rant> I remember that it took Apple ages to fix this in iPods and iTunes; then they finally did when the 2nd gen Nano was released. But it stayed fixed after that. There are rumors that some versions of gstreamer had functional gapless MP3, but it later broke and nobody bothered to fix it. Why is it so difficult? Does nobody notice? Does anybody listen to, say, Pictures at an Exhibition? (You'd notice.) Sigh.</semi-rant>
Are they similar to the old Xenix and Unix drivers, 'cause those were fun.:-/
Thank you for reminding me. I'll be twitching for the rest of the day. Funny how much outright crap one can remember -- I thought those neurons have long died off out of sheer disgust.
For the mercifully uninitiated, SCO Unix had a baroque system of little configuration files, object modules, a severely handicapped C compiler, and a similarly crippled linker for the purpose of modifyng kernel parameters and installing third-party drivers, both of which required re-linking the whole kernel (sysctl? dynamic data structures? run-time linkable modules? never heard. OK, it was the early '90s, but still.)
SCO, in their infinite wisdom, tried to make driver installation "user friendly": you would unpack the archive, start the installation script, and a few minutes later reboot to a freshly built kernel. Of course this failed to account for buggy scripts, weird configurations, and cargo-cult admins, any of which could make an unholy mess of the system and/or render it unbootable. I've had the dubious pleasure of cleaning up a number of such messes.
Oops, you mis-used a word there. You mean a 'critical mass' would not be caused and no nuclear detonation would result. The much more likely 'criticality' condition is a non-critical mass that causes the thermal explosion that has the same effect as a 'dirty' bomb.
Criticality -- the point at which a fuel assembly can sustain a nuclear chain reaction by itself.
Critical mass -- the smallest mass of fuel for which the criticality is reached; depends on geometry, density, temperature etc.
So the GP's usage is correct. To be really precise, one could note that weapon fuel should go from subcritical to prompt critical to achieve explosion, but that would be nitpicking in this context.
In terms of scale it seems like we might just be able to get away with blasting our refuse into the sun and not see any significant consequences.
Scale-wise, the Sun could probably swallow the whole Earth and get only mild indigestion. However, launching anything into the Sun is a waste of energy; it's cheaper to punt it into interstellar space, as discussed here.
Something like 90% of end users are running behind nat already.
Existing users won't be affected much: what works for them now will work for the foreseeable future. But that smartphone you're going to buy a year or so down the road -- it's quite possible that it will be IPv6-only on the cellular-radio side (3G or whatever the provider uses for data).
Why? Existing mobile data networks are a mess, addressing-wise. There aren't enough public IPv4 addresses to go around, so you get a private one. Not only it's NATed to hell and back, there is a chance that it will clash with the address received on the WiFi interface when you're connected to your home or office network. So you get creative solutions like using bogons... Shudder.
It's so much easier with IPv6. No possible address clashes. No need for gross kludges. Yes, NAT64/DNS64 is necessary if your destination is IPv4-only, but that is actually a nice carrot for web sites and content providers: "enbale IPv6 on your customer-facing servers and our users will reach you directly, without workarounds".
So IMO the IPv4 exhaustion will affect end users rather soon, just not necessarily in the way that will be visible to them.
[...] if a website advertises itself as simultaneously IPv4/IPv6 compliant, and someone's computer/browser thinks they are IPv6 compliant but their attempts to connect via IPv6 don't make it through (ISP? router? modem? who knows), their connection times out and the site is unreachable.
More precisely: if the DNS has both v6 (AAAA) and v4 (A) records for the site's name, and the client prefers v6 connectivity over v4, and a v6 connection can't be established for some reason, the site will appear to be broken. Most large sites have measured this kind of brokenness, but haven't published their methodology nor results; there is an exception, but it's limited to Scandinavian users. It is nevertheless a very interesting analysis, which basically suggests that eliminating just two sources of brokenness (OS X < 10.6.5 and Opera < 10.50) would practically eliminate client loss.
Or they could just require a land-based proxy server between phones for phone-to-phone applications where neither side is on an "enterprise" service level agreement. According to acceptable use policies that I've read, "running a server" isn't something that one is supposed to do on a telephone.
So, what about 4G, which is supposed to be IP end-to-end? More NAT and proxies? I don't think so. IPv6 is the only sane solution for that, and if anyone can push for its adoption, it will be the large mobile operators.
Ahhh... This is the essence of what occasionally makes Slashdot great. An unexpectedly expert post (and beautifully written, the sound you heard was that of a million grammar Nazis shrieking in frustration after scouring the text, not finding anything to complain about, and falling silent), followed by what I can only call "respectful irreverence". Splendid.
Because cars are not driven by computer, any driver that is remotely conscious of his surroundings would be able to spot the difficulty with trying to utilize paths that are clearly not intended for anyone to utilize.
I thought so too, and then saw this. There is always a bigger idiot.
except unabomber, oklahoma bomber, eco nuts, black panthers and other pure christian terrorists. but dont let facts get in the way of security theatre!
Except those guys didn't try to commit crimes on airplanes.
Look up American Airlines Flight 444. It's the reason for the A in "Unabomber", you know.
I forgot to mention that Opera didn't really put a lot of effort into the iPhone ap. They already had the Opera Mini browser for other cellphones, so all they needed to do was copy it over.
Opera Mini for other phones is a Java (J2ME) application. The one for the iPhone is Obj-C. There is no way to go from one to the other without a lot of effort.
The US nuclear industry has lagged behind because for the past 50 years, the regulatory and political environment allowed anti-nuclear activists to delay the completion of plants indefinitely.
Oh the hyperbole. 50 years ago (53 for you nitpickers) Shippingport came online. You know,
"the first fully civilian nuclear reactor." Nuclear power industry was just starting to appear, and the "regulatory and political environment" was anything but inimical to it. Rather gung-ho, in fact.
The past 30 years instead of 50? Probably. But not without good reason. An industry mired in secrecy and obfuscation stemming from its military origins, where screw-ups can happen and are serious -- potentially disastrous -- if they do, does not inspire confidence. Neither does pooh-poohing genuine concerns. "Waste? Oh, that's easy, we'll just reprocess it!" Sure. Hanford did that for years. Recovered tons of weapons fuel, ended up with additional megatons of extremely nasty waste. (Ditto Sellafield in the UK and La Hague in France.) There are better ways to do it for civilian use, and actinide burners may be one of them, which is why they should be built and studied; but they -- and all other things nuclear -- should not be presented as a silver bullet, in an arrogant and condescending tone.
Some may get an impression that I am too opposed to nuclear power. Not in the least. IMO, nuclear is the only sufficiently plentiful energy supply which we can comfortably use for the next thousand years, and is not geographically or otherwise limited like solar or wind. But it is not without risks, and while those risks should not be overstated (like the shrillest environmentalists do), they should not be swept under the carpet, either.
You dummy, use the right cursor key to swap the two most recent entries in the stack.
That works only if you have already entered the number (expression, &c) on the stack (i.e., the command line is not active.) True x<>y works even if you're still in the command line, and it's unambiguously labeled on the keyboard. I dearly love my 48SX, but for pure number crunching any old RPN calculator (like the 11C mentioned above) is faster to use. Btw, "right cursor for swap" started with the 48SX, and on its keyboard it's quite obvious why: SWAP is right above the right arrow, left-shifted.
Slashdot Mirror
Take a look at Hurricane Electric, they offer free tunnel, dns hosting, etc. [...] You can be up and running on an IPv6 tunnel from anywhere in 30 seconds!
Hurricane Electric is great, but note this item in their FAQ:
I've tried to create a tunnel but did not succeed. Is there a basic guideline on how to set up a tunnel?
[...]
*Two important notes:
That's protocol 41, not port, and support for any non-garden-variety protocol in the cheaper routers/APs is notably spotty. Who knows what POS you're going to end behind at your next hotel?
There's no math field work, where you need immediate mobility anymore. There's no need for a graphing calculator, which must not be used during exams.
There still are niches where a powerful calculator is desirable for field work. Surveying is one -- search for "hp-50g surveying" to see for yourself. Yes, there are specialized data collectors, usually running WinCE (shudder), but a suitably outfitted HP-50g is a very worthwhile alternative.
From the picture
They photographed it alongside a metric ruler? Blasphemy!
Replying to undo accidental "Redundant" moderation. Argh.
they were using Windows 95 to control the display?
Or maybe Vista?
(This seems oddly appropriate.)
Doing a reverse lookup for every goddamn IP I ever see would be completely impractical.
Hyperbole much? Recognizing IPv6 addresses is not that different from recognizing IPv4 ones, especially if you assign local parts manually, which you should do for the servers instead of relying on autoconfiguration, for reasons which should be obvious. So, 2001:db8:0:1001::4 is...?
With a bit of practice, parsing the IPv6 addresses you deal with frequently will become second nature. If it doesn't, then maybe you're not such a hot network admin.
Also: "Reality is that which, when you stop believing in it, doesn't go away." - Philip K. Dick
How desperate, and appropriate.
Tactical nukes make nuclear war practical.
That's what the nuclear-capable nations' militaries hoped for, but it didn't turn out that way. As already stated in a number of posts above (and argued in TFA), the distinction between tactical and strategic nukes is very difficult to make. Nuclear weapons are simply too powerful (and too dirty, regardless of the size) to be useful in a tactical setting.
One party which seems to have recently realized this is, wonder of wonders, North Korea. There are strong indications that their designed yield was about 4 kT. A piddly tac nuke, right? Well, as mentioned in the discussion after the referenced article, imagine those 4 kT going off in the heart of Seoul or Tokyo...
North Korea had just signed a agreement not to test weapons – which specifically included not testing long range missiles for “scientific purposes” in exchange for food aid.
They didn't sign anything -- see this article. Missile launch ban is the consequence of the UNSC Resolution 1874, adopted after the North's second nuclear test. I don't think that the North is irrational -- just quite determined to preserve the regime and prepared to play provocative moves to that end.
Please... Try to make gapless MP3 playback work. Or if it's the fault of the underlying engine, file bugs against it; you are better positioned to understand the issues.
<semi-rant> I remember that it took Apple ages to fix this in iPods and iTunes; then they finally did when the 2nd gen Nano was released. But it stayed fixed after that. There are rumors that some versions of gstreamer had functional gapless MP3, but it later broke and nobody bothered to fix it. Why is it so difficult? Does nobody notice? Does anybody listen to, say, Pictures at an Exhibition? (You'd notice.) Sigh.</semi-rant>
Are they similar to the old Xenix and Unix drivers, 'cause those were fun. :-/
Thank you for reminding me. I'll be twitching for the rest of the day. Funny how much outright crap one can remember -- I thought those neurons have long died off out of sheer disgust.
For the mercifully uninitiated, SCO Unix had a baroque system of little configuration files, object modules, a severely handicapped C compiler, and a similarly crippled linker for the purpose of modifyng kernel parameters and installing third-party drivers, both of which required re-linking the whole kernel (sysctl? dynamic data structures? run-time linkable modules? never heard. OK, it was the early '90s, but still.)
SCO, in their infinite wisdom, tried to make driver installation "user friendly": you would unpack the archive, start the installation script, and a few minutes later reboot to a freshly built kernel. Of course this failed to account for buggy scripts, weird configurations, and cargo-cult admins, any of which could make an unholy mess of the system and/or render it unbootable. I've had the dubious pleasure of cleaning up a number of such messes.
Oops, you mis-used a word there. You mean a 'critical mass' would not be caused and no nuclear detonation would result. The much more likely 'criticality' condition is a non-critical mass that causes the thermal explosion that has the same effect as a 'dirty' bomb.
Criticality -- the point at which a fuel assembly can sustain a nuclear chain reaction by itself.
Critical mass -- the smallest mass of fuel for which the criticality is reached; depends on geometry, density, temperature etc.
So the GP's usage is correct. To be really precise, one could note that weapon fuel should go from subcritical to prompt critical to achieve explosion, but that would be nitpicking in this context.
No; in her house at CNN, dead Nancy Grace waits dreaming.
O'RLYEH?
In terms of scale it seems like we might just be able to get away with blasting our refuse into the sun and not see any significant consequences.
Scale-wise, the Sun could probably swallow the whole Earth and get only mild indigestion. However, launching anything into the Sun is a waste of energy; it's cheaper to punt it into interstellar space, as discussed here.
Not really.
Something like 90% of end users are running behind nat already.
Existing users won't be affected much: what works for them now will work for the foreseeable future. But that smartphone you're going to buy a year or so down the road -- it's quite possible that it will be IPv6-only on the cellular-radio side (3G or whatever the provider uses for data).
Why? Existing mobile data networks are a mess, addressing-wise. There aren't enough public IPv4 addresses to go around, so you get a private one. Not only it's NATed to hell and back, there is a chance that it will clash with the address received on the WiFi interface when you're connected to your home or office network. So you get creative solutions like using bogons... Shudder.
It's so much easier with IPv6. No possible address clashes. No need for gross kludges. Yes, NAT64/DNS64 is necessary if your destination is IPv4-only, but that is actually a nice carrot for web sites and content providers: "enbale IPv6 on your customer-facing servers and our users will reach you directly, without workarounds".
So IMO the IPv4 exhaustion will affect end users rather soon, just not necessarily in the way that will be visible to them.
I came when I saw your userid.
Multiple orgasms ahoy.
[...] if a website advertises itself as simultaneously IPv4/IPv6 compliant, and someone's computer/browser thinks they are IPv6 compliant but their attempts to connect via IPv6 don't make it through (ISP? router? modem? who knows), their connection times out and the site is unreachable.
More precisely: if the DNS has both v6 (AAAA) and v4 (A) records for the site's name, and the client prefers v6 connectivity over v4, and a v6 connection can't be established for some reason, the site will appear to be broken. Most large sites have measured this kind of brokenness, but haven't published their methodology nor results; there is an exception, but it's limited to Scandinavian users. It is nevertheless a very interesting analysis, which basically suggests that eliminating just two sources of brokenness (OS X < 10.6.5 and Opera < 10.50) would practically eliminate client loss.
How big is a service region? Each region could get its own /8 of sixteen million IPv4 addresses in 10.* for connections back to the IPv4 net.
Verizon already has this, times 40: see their presentation at the Google IPv6 Implementor's Conference (p.3). They're not too happy about it.
Or they could just require a land-based proxy server between phones for phone-to-phone applications where neither side is on an "enterprise" service level agreement. According to acceptable use policies that I've read, "running a server" isn't something that one is supposed to do on a telephone.
So, what about 4G, which is supposed to be IP end-to-end? More NAT and proxies? I don't think so. IPv6 is the only sane solution for that, and if anyone can push for its adoption, it will be the large mobile operators.
It's been around for what? 10 years now? Give me a break.
12 years pretty much exactly:
IPv6 was developed by the Internet Engineering Task Force (IETF), and is described in Internet standard document RFC 2460, published in December 1998.
Make it 15 years: RFC 1883, the first IPv6 specification, was published in December 1995.
Ahhh... This is the essence of what occasionally makes Slashdot great. An unexpectedly expert post (and beautifully written, the sound you heard was that of a million grammar Nazis shrieking in frustration after scouring the text, not finding anything to complain about, and falling silent), followed by what I can only call "respectful irreverence". Splendid.
Because cars are not driven by computer, any driver that is remotely conscious of his surroundings would be able to spot the difficulty with trying to utilize paths that are clearly not intended for anyone to utilize.
I thought so too, and then saw this. There is always a bigger idiot.
Except those guys didn't try to commit crimes on airplanes.
Look up American Airlines Flight 444. It's the reason for the A in "Unabomber", you know.
I forgot to mention that Opera didn't really put a lot of effort into the iPhone ap. They already had the Opera Mini browser for other cellphones, so all they needed to do was copy it over.
Opera Mini for other phones is a Java (J2ME) application. The one for the iPhone is Obj-C. There is no way to go from one to the other without a lot of effort.
The US nuclear industry has lagged behind because for the past 50 years, the regulatory and political environment allowed anti-nuclear activists to delay the completion of plants indefinitely.
Oh the hyperbole. 50 years ago (53 for you nitpickers) Shippingport came online. You know, "the first fully civilian nuclear reactor." Nuclear power industry was just starting to appear, and the "regulatory and political environment" was anything but inimical to it. Rather gung-ho, in fact.
The past 30 years instead of 50? Probably. But not without good reason. An industry mired in secrecy and obfuscation stemming from its military origins, where screw-ups can happen and are serious -- potentially disastrous -- if they do, does not inspire confidence. Neither does pooh-poohing genuine concerns. "Waste? Oh, that's easy, we'll just reprocess it!" Sure. Hanford did that for years. Recovered tons of weapons fuel, ended up with additional megatons of extremely nasty waste. (Ditto Sellafield in the UK and La Hague in France.) There are better ways to do it for civilian use, and actinide burners may be one of them, which is why they should be built and studied; but they -- and all other things nuclear -- should not be presented as a silver bullet, in an arrogant and condescending tone.
Some may get an impression that I am too opposed to nuclear power. Not in the least. IMO, nuclear is the only sufficiently plentiful energy supply which we can comfortably use for the next thousand years, and is not geographically or otherwise limited like solar or wind. But it is not without risks, and while those risks should not be overstated (like the shrillest environmentalists do), they should not be swept under the carpet, either.
You dummy, use the right cursor key to swap the two most recent entries in the stack.
That works only if you have already entered the number (expression, &c) on the stack (i.e., the command line is not active.) True x<>y works even if you're still in the command line, and it's unambiguously labeled on the keyboard. I dearly love my 48SX, but for pure number crunching any old RPN calculator (like the 11C mentioned above) is faster to use. Btw, "right cursor for swap" started with the 48SX, and on its keyboard it's quite obvious why: SWAP is right above the right arrow, left-shifted.