When the internet was first conceived they needed to define source and >>destination address fields big enough to address many more hosts than would >>ever be connected to the net. So they chose 8 bits.
I don't think so. For example extremely well known IP addresses such as >192.168.0.1 cannot be expressed in just 8 bits.
According to Roland Perry <roland@perry.uk>:
When the internet was first conceived they needed to define source and
destination address fields big enough to address many more hosts than would >>> ever be connected to the net. So they chose 8 bits.
I don't think so. For example extremely well known IP addresses such as
192.168.0.1 cannot be expressed in just 8 bits.
He's probably thinking of the Arpanet, which had six bit IMP numbers and
two bit host numbers on each IMP. That was NCP, the predecessor to TCP/IP.
192.168.0.1 is an IPv4 address, 32 bits. The IPv4 addresses ran out around the turn of the millenium, and much larger IPv6 were supposed to replace them. But for reasons far removed from railroads, the transition to IPv6
was not smooth and we're still using both v4 an v6 addresses and will be
for the forseeable future.
According to Roland Perry <roland@perry.uk>:
When the internet was first conceived they needed to define source and >>>destination address fields big enough to address many more hosts than would >>>ever be connected to the net. So they chose 8 bits.
I don't think so. For example extremely well known IP addresses such as >>192.168.0.1 cannot be expressed in just 8 bits.
He's probably thinking of the Arpanet, which had six bit IMP numbers and
two bit host numbers on each IMP. That was NCP, the predecessor to TCP/IP.
192.168.0.1 is an IPv4 address, 32 bits. The IPv4 addresses ran out around >the turn of the millenium,
and much larger IPv6 were supposed to replace them. But for reasons
far removed from railroads, the transition to IPv6 was not smooth and
we're still using both v4 an v6 addresses and will be for the
forseeable future.
I'd actual venture that for IP6 they've overdone it. 128 bits/16 bytes seems >to have annoyed a lot of network admins as a large part of their job is using >raw IP numbers. ...
In message <10hhnuu$2330$1@gal.iecc.com>, at 18:46:54 on Fri, 12 Dec
2025, John Levine <johnl@taugh.com> remarked:
According to Roland Perry <roland@perry.uk>:
When the internet was first conceived they needed to define source and >>>>destination address fields big enough to address many more hosts than would >>>>ever be connected to the net. So they chose 8 bits.
I don't think so. For example extremely well known IP addresses such as >>>192.168.0.1 cannot be expressed in just 8 bits.
He's probably thinking of the Arpanet, which had six bit IMP numbers and >>two bit host numbers on each IMP. That was NCP, the predecessor to TCP/IP. >>
192.168.0.1 is an IPv4 address, 32 bits. The IPv4 addresses ran out around >>the turn of the millenium,
No they didn't. That's when we ran out of Class-A/B/C addresses.
There were still plenty of individual IPv4 addresses available in the >2010's, a period when I was employed as RIPE-NCC's outreach person ...
persuade the world to switch to IPv6. But in the absence of a famine of
IPv4 addresses (partly due to carrier-grade NAT) ...
According to <boltar@caprica.universe>:
I'd actual venture that for IP6 they've overdone it. 128 bits/16 bytes seems >>to have annoyed a lot of network admins as a large part of their job is using
raw IP numbers. ...
Those network admins are totally missing the point. In IPv6, the address space
is so large that a sensible admin gives every customer a giant chunk of the >same size, greatly easing the job. Every network is a /64, every customer >gets a /56 or /48 for their internal use. Compare that to IPv4 where they >have to dole out the individual addresses one or two at a time these days.
192.168.0.1 is an IPv4 address, 32 bits. The IPv4 addresses ran out around >>>the turn of the millenium,
No they didn't. That's when we ran out of Class-A/B/C addresses.
There were still plenty of individual IPv4 addresses available in the >>2010's, a period when I was employed as RIPE-NCC's outreach person ...
Indeed, They invented CIDR to allow finer division of the IPv4 space >allocations when the original scheme ran out. That's been dismayingly >effective -- I see that about a month ago the set of IPv4 routes seen
by backbone routers exceeded a million. It's somewhat smaller when >overlapping and adjacent routes are merged, but the routers still
need huge expensive specialized memories to move packets at speed.
persuade the world to switch to IPv6. But in the absence of a famine of >>IPv4 addresses (partly due to carrier-grade NAT) ...
Partly that but I think more CIDR
and the ability to sell off underused chunks IPv4 address space for a
great deal of money. For example, MIT in Massachusetts originally had
18/8, with 16 million addresses, but in 2019 renumbered down into
18.0/11, with 2 million, and sold off the other 14 million to AWS.
On Sat, 13 Dec 2025 20:19:26 -0000 (UTC)
John Levine <johnl@taugh.com> gabbled:
According to <boltar@caprica.universe>:
I'd actual venture that for IP6 they've overdone it. 128 bits/16 bytes seems
to have annoyed a lot of network admins as a large part of their job is using
raw IP numbers. ...
Those network admins are totally missing the point. In IPv6, the address space
They're the ones doing the job, I'll put their opinions top of the list.
is so large that a sensible admin gives every customer a giant chunk of the >> same size, greatly easing the job. Every network is a /64, every customer >> gets a /56 or /48 for their internal use. Compare that to IPv4 where they >> have to dole out the individual addresses one or two at a time these days.
There's a reason almost no company uses IP6 for their internal networks. Other than being a pain to set up - 1 hop link local addresses are next to useless and good luck setting up internally routable IP6 addresses - no company
wants its internal network exposed to the public internet so the whole unique
address for every machine raison d'etre of IP6 becomes utterly irrelevant. IP4 NAT works nicely for most places, its a mature technology and is an extra
layer of protection behind the firewall and any external IP6 requirements can be met with an IP6 <-> IP4 translation layer at the door.
On Sat, 13 Dec 2025 20:19:26 -0000 (UTC)
John Levine <johnl@taugh.com> gabbled:
According to <boltar@caprica.universe>:
I'd actual venture that for IP6 they've overdone it. 128 bits/16 bytes seems >>>to have annoyed a lot of network admins as a large part of their job
is using
raw IP numbers. ...
Those network admins are totally missing the point. In IPv6, the
address space
They're the ones doing the job, I'll put their opinions top of the list.
is so large that a sensible admin gives every customer a giant chunk of the >>same size, greatly easing the job. Every network is a /64, every customer >>gets a /56 or /48 for their internal use. Compare that to IPv4 where they >>have to dole out the individual addresses one or two at a time these days.
There's a reason almost no company uses IP6 for their internal networks.
Other than being a pain to set up - 1 hop link local addresses are next to >useless and good luck setting up internally routable IP6 addresses - no company
wants its internal network exposed to the public internet so the whole unique >address for every machine raison d'etre of IP6 becomes utterly irrelevant. >IP4 NAT works nicely for most places, its a mature technology and is an extra >layer of protection behind the firewall and any external IP6 requirements can >be met with an IP6 <-> IP4 translation layer at the door.
It may come as a surprise that many outfits have routeable IPv4 addresses
on their internal machines. These are organisations that were very early >adopters of IPv4 and got large allocations before the concept of address >exhaustion was ever a thing.
<boltar@caprica.universe> wrote:
There's a reason almost no company uses IP6 for their internal networks.
Other than being a pain to set up - 1 hop link local addresses are next to >> useless and good luck setting up internally routable IP6 addresses - no >company
wants its internal network exposed to the public internet so the whole >unique
address for every machine raison d'etre of IP6 becomes utterly irrelevant. >> IP4 NAT works nicely for most places, its a mature technology and is an >extra
layer of protection behind the firewall and any external IP6 requirements can
be met with an IP6 <-> IP4 translation layer at the door.
NAT is not a substitute for a firewall. The protection it is alleged to
give is perhaps protection against staff who donrCOt know what they are >doing.
My domestic ISP provides me with IPv6 as well as IPv4. My humble domestic >router provides all the necessary firewalling. ThererCOs no need for IPv6 >NAT.
It may come as a surprise that many outfits have routeable IPv4 addresses
on their internal machines. These are organisations that were very early
adopters of IPv4 and got large allocations before the concept of address >exhaustion was ever a thing.
In message <10hlutn$shmn$1@dont-email.me>, at 09:10:15 on Sun, 14 Dec
2025, boltar@caprica.universe remarked:
There's a reason almost no company uses IP6 for their internal networks.
I have news for you. Company internal networks aren't the only users of
IP Addresses.
Trivial example: Five and a half billion people with a mobile phone.
On Sun, 14 Dec 2025 13:01:13 +0000
Roland Perry <roland@perry.uk> gabbled:
In message <10hlutn$shmn$1@dont-email.me>, at 09:10:15 on Sun, 14 Dec >>2025, boltar@caprica.universe remarked:
There's a reason almost no company uses IP6 for their internal networks.
I have news for you. Company internal networks aren't the only users
of IP Addresses.
Trivial example: Five and a half billion people with a mobile phone.
So what?
The phone company can translate addresses any way it wants as all
the phones are effectively inside a corporate network when using 4/5G.
And when using wifi they'll get whatever the wifi router gives them.
In message <10hml49$8bov$1@dont-email.me>, at 15:29:14 on Sun, 14 Dec
2025, boltar@caprica.universe remarked:
On Sun, 14 Dec 2025 13:01:13 +0000
Roland Perry <roland@perry.uk> gabbled:
In message <10hlutn$shmn$1@dont-email.me>, at 09:10:15 on Sun, 14 Dec
2025, boltar@caprica.universe remarked:
There's a reason almost no company uses IP6 for their internal networks. >>>I have news for you. Company internal networks aren't the only users
of IP Addresses.
Trivial example: Five and a half billion people with a mobile phone.
So what?
Needs lots of IP Addresses.
The phone company can translate addresses any way it wants as all
the phones are effectively inside a corporate network when using 4/5G.
Nope, never heard of roaming on other people's networks?
As an aside to this, IrCOm finding now that when IrCOm roaming (Vodafone) I >appear to still be in the UK, as shown by the numerous websites thatThere's a reason almost no company uses IP6 for their internal networks. >>>>I have news for you. Company internal networks aren't the only users
of IP Addresses.
Trivial example: Five and a half billion people with a mobile phone.
So what?
Needs lots of IP Addresses.
The phone company can translate addresses any way it wants as all
the phones are effectively inside a corporate network when using 4/5G.
Nope, never heard of roaming on other people's networks?
attempt to geolocate me. Essentially I appear to be on a VPN back to the
UK. Even the BBC thinks IrCOm in the UK.
In message <10hml49$8bov$1@dont-email.me>, at 15:29:14 on Sun, 14 Dec
2025, boltar@caprica.universe remarked:
On Sun, 14 Dec 2025 13:01:13 +0000
Roland Perry <roland@perry.uk> gabbled:
In message <10hlutn$shmn$1@dont-email.me>, at 09:10:15 on Sun, 14 Dec >>>2025, boltar@caprica.universe remarked:
There's a reason almost no company uses IP6 for their internal networks. >>>I have news for you. Company internal networks aren't the only users
of IP Addresses.
Trivial example: Five and a half billion people with a mobile phone.
So what?
Needs lots of IP Addresses.
The phone company can translate addresses any way it wants as all
the phones are effectively inside a corporate network when using 4/5G.
Nope, never heard of roaming on other people's networks?
And when using wifi they'll get whatever the wifi router gives them.
About as relevant as saying what a lovely colour the case is.
On Sun, 14 Dec 2025 18:46:04 +0000
Roland Perry <roland@perry.uk> gabbled:
In message <10hml49$8bov$1@dont-email.me>, at 15:29:14 on Sun, 14 Dec >>2025, boltar@caprica.universe remarked:
On Sun, 14 Dec 2025 13:01:13 +0000
Roland Perry <roland@perry.uk> gabbled:
In message <10hlutn$shmn$1@dont-email.me>, at 09:10:15 on Sun, 14
Dec 2025, boltar@caprica.universe remarked:
There's a reason almost no company uses IP6 for their internal networks. >>>>I have news for you. Company internal networks aren't the only users >>>>of IP Addresses.
Trivial example: Five and a half billion people with a mobile phone.
So what?
Needs lots of IP Addresses.
The phone company can translate addresses any way it wants as all
the phones are effectively inside a corporate network when using 4/5G.
Nope, never heard of roaming on other people's networks?
And? They just give it another internal IP address. Whats the problem?
And when using wifi they'll get whatever the wifi router gives them.
About as relevant as saying what a lovely colour the case is.
The relevancy is that an IP4 address from a router is internal only yet the >phone still works even with calls. Who knew?
In message <10honfe$b59k$1@dont-email.me>, at 10:21:34 on Mon, 15 Dec
2025, boltar@caprica.universe remarked:
On Sun, 14 Dec 2025 18:46:04 +0000
Roland Perry <roland@perry.uk> gabbled:
In message <10hml49$8bov$1@dont-email.me>, at 15:29:14 on Sun, 14 Dec >>>2025, boltar@caprica.universe remarked:
On Sun, 14 Dec 2025 13:01:13 +0000
Roland Perry <roland@perry.uk> gabbled:
In message <10hlutn$shmn$1@dont-email.me>, at 09:10:15 on Sun, 14 >>>>>Dec 2025, boltar@caprica.universe remarked:
There's a reason almost no company uses IP6 for their internal networks. >>>>>I have news for you. Company internal networks aren't the only users >>>>>of IP Addresses.
Trivial example: Five and a half billion people with a mobile phone.
So what?
Needs lots of IP Addresses.
The phone company can translate addresses any way it wants as all
the phones are effectively inside a corporate network when using 4/5G.
Nope, never heard of roaming on other people's networks?
And? They just give it another internal IP address. Whats the problem?
And when using wifi they'll get whatever the wifi router gives them.
About as relevant as saying what a lovely colour the case is.
The relevancy is that an IP4 address from a router is internal only yet the >>phone still works even with calls. Who knew?
I won't even attempt to try polishing the turd which is that posting.
I have news for you. Company internal networks aren't the only >>>>>>users of IP Addresses.So what?
Trivial example: Five and a half billion people with a mobile phone. >>>>>
Needs lots of IP Addresses.
The phone company can translate addresses any way it wants as allNope, never heard of roaming on other people's networks?
the phones are effectively inside a corporate network when using 4/5G. >>>>
And? They just give it another internal IP address. Whats the problem?
And when using wifi they'll get whatever the wifi router gives them.
About as relevant as saying what a lovely colour the case is.
The relevancy is that an IP4 address from a router is internal only yet the >>>phone still works even with calls. Who knew?
I won't even attempt to try polishing the turd which is that posting.
Because its a fact and you have no way in which to save face.
In message <10hpc08$c0vf$1@dont-email.me>, at 16:11:52 on Mon, 15 Dec
2025, boltar@caprica.universe remarked:
I have news for you. Company internal networks aren't the only >>>>>>>users of IP Addresses.So what?
Trivial example: Five and a half billion people with a mobile phone. >>>>>>
Needs lots of IP Addresses.
The phone company can translate addresses any way it wants as all >>>>>>the phones are effectively inside a corporate network when using 4/5G. >>>>>Nope, never heard of roaming on other people's networks?
And? They just give it another internal IP address. Whats the problem?
And when using wifi they'll get whatever the wifi router gives them. >>>>>About as relevant as saying what a lovely colour the case is.
The relevancy is that an IP4 address from a router is internal only yet the >>>>phone still works even with calls. Who knew?
I won't even attempt to try polishing the turd which is that posting.
Because its a fact and you have no way in which to save face.
Bald assertion like won't work, I'm afraid.
192.168.*.* isn't memorable, for example. Whereas 555, the USA code for
directory enquiries, is.
Not all that memorable, as the USA code for directory enquiries is 411. >555-nnnn is rarely assigned but recommended for use in fictional works.
Of course, 192 was for many years the UK code for directory enquiries.
Personalised plates tend to be the ones that people transfer the numbers
and letters from vehicle to vehicle because they hold an attachment to them >for various reasons.
According to Marland <gemehabal@btinternet.co.uk>:
Personalised plates tend to be the ones that people transfer the numbers >>and letters from vehicle to vehicle because they hold an attachment to them >>for various reasons.
My license plate says IPV4.
No relation to a guy on the other side of town who has TCP-IP.
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