Why root dns 13?

How does it work? Why 13?
July 9th 19 at 10:56
2 answers
July 9th 19 at 10:58
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Because gladiolus. Many still mirror the same there.
Meanwhile they still thirteen... - Mikayla.Roh commented on July 9th 19 at 11:01
each ip like anycast'marketing, i.e., for some servers - tomasa_OConn commented on July 9th 19 at 11:04
Absolutely 13 unikatowych addresses. Only 13 more. - Mikayla.Roh commented on July 9th 19 at 11:07
: write what is anycast in IPv6, and the root addresses v4. Ie v4 to v6 is allowed to the root servers? Provider or what? - trystan commented on July 9th 19 at 11:10
IPv4 is also able of anycast. So for example ivi.ru did your CDN using miracle anycast https://habrahabr.ru/company/ivi/blog/236065/ - Mikayla.Roh commented on July 9th 19 at 11:13
July 9th 19 at 11:00
Because you no longer fit in one UDP datagram
When typing in the browser ya.ru in a udp packet as the ip dest address is 13 or something? - Mikayla.Roh commented on July 9th 19 at 11:03
Network and protocols: https://events.yandex.ru/lib/talks/650/ - tomasa_OConn commented on July 9th 19 at 11:06
In the 512 bytes were placed only 13 of the addresses. Historically. - Mikayla.Roh commented on July 9th 19 at 11:09
"When you enter into the browser ya.ru" a request to DNS providersone not every time comes, not what to root, most likely you will answer your router or even address will be taken from the cache on your computer... - trystan commented on July 9th 19 at 11:12
: the router is also there is a DNS-cache? - Mikayla.Roh commented on July 9th 19 at 11:15
He even has, quite a DNS server. - trystan commented on July 9th 19 at 11:18
DNS cache, even the browser.
Then your OS is your DNS client cache, then the DNS server, then DNS server DNS server.
To the root server a request that comes not directly from you, and from the DNS server in your area - Mikayla.Roh commented on July 9th 19 at 11:21
: 1)given me a dns server this is the address that was given to me by the provider?
2)when moving to the network level ip packet destination is a dns provider? but the 13 root address also in there are encapsulated in data quality or is it the dns server analyzes and decides on which of the 13 addresses to send? - Mikayla.Roh commented on July 9th 19 at 11:24
Read the damn book:
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It shouldn't be that difficult... - Mikayla.Roh commented on July 9th 19 at 11:27
: DNS server, you can specify ANY, which will be able to reach. at least the one that the ISP gave even a raise, though public 8.8.8.8 to use.

the RMS is nowhere encapsulated. Historically is the thing, your car never Domingue to the root servers itself. - trystan commented on July 9th 19 at 11:30
307d7b4016564d0d88f6214c9ca9e0af.jpg - Mikayla.Roh commented on July 9th 19 at 11:33
: no one in the end clearly did not answer if you don't know then say so - Jeff28 commented on July 9th 19 at 11:36
"Because it is no longer contained in a single UDP datagram" is not the answer? - trystan commented on July 9th 19 at 11:39
I wanted technical details. as 13 addresses can fit in a dns packet e 512 bytes? 1 address is not 4 bytes? - Mikayla.Roh commented on July 9th 19 at 11:42
Strange... What's stopping you googling for the words "the format of the dns packet"? - Jeff28 commented on July 9th 19 at 11:45

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