Questions tagged [networks]
9 questions
116
votes
1 answer
Can every grain of sand be addressed in IPv6?
I was once watching a slideshow about the new IPv6, and it mentioned that it is large enough for every grain of sand on earth to be IP addressable.
Is there any grain of truth behind this? (no pun intended)
Sal Rahman
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27
votes
1 answer
Are there enough IPv6 addresses for every atom on the surface of the Earth?
There is already a question on this site comparing the number of IPv6 addresses to the number of grains of sand on earth, but my question is different.
There is a famous quote that many in networking have heard before:
"It isn't remotely likely…
Sufiyan Ghori
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20
votes
1 answer
Can the USA turn off the whole internet by deactivating root DNS servers based there?
Drinking with a friend, he told me how his lecturer had revealed to his class that the US can turn off the Internet for the whole world if it wants to, because all of the DNS root servers are there. I wasn't convinced, because that would go against…
puppybeard
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18
votes
1 answer
Is Huawei the front for a Chinese espionage attempt?
There are a lot of rumors and claims being made that products manufactured by Huawei act suspiciously or in a non-standard way in order to send information "back home" or to facilitate unauthorized access. The more general claim is that Huawei is…
Sonny Ordell
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16
votes
1 answer
Is the 500-mile email case true?
According to the author of this story, an improperly configured email server had too strict timeout settings which effectively limited its communication radius to 500 miles.
The author states it's the maximum range a signal can travel there and…
Quassnoi
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13
votes
0 answers
Did Comcast attempt to coerce Netflix by slowing down its traffic?
In 2014, a news story erupted over a dispute between Netflix and Comcast over connectivity and distribution.
Comcast was accused of deliberately blocking or restricting Netflix traffic.
For example, 100,000 people signed an online petition to the…
Dave
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10
votes
2 answers
Does rain affect ADSL speed or reliability?
ADSL connections in Sydney, Australia seem to either not work, or work slower when it's been raining or after it's been raining.
I tried googling for ADSL and rain, and I got a lot of user-generated content, but not many reliable sources.
Does rain…
Andrew Grimm
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5
votes
1 answer
Did the Pakistan government accidentally cause YouTube to become unusable in 2008?
From the source of all knowledge
On February 22, 2008, Pakistan Telecommunications Authority (PTA)
attempted to block regional access to YouTube following a government
order. The attempt inadvertently caused a worldwide YouTube blackout
that…
Celeritas
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4
votes
1 answer
Your domain name may take 24-48 hours to propagate
I've heard this from almost every domain name registrar: your domain name "needs to propagate through the DNS and may take 24-48 hours to do so." And yet, bar a few registrations (which might take half a day), they all are ready within 1-2 hours, in…
Thomas O
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