Capturing this thought in passing.
IPv6 was designed (IIRC) so that users would never ever run out of IP addresses.
So each smart device in your home could have their own address, no need to share using NAT.
For a PC such as this (and no, VM don't support V6) would you expect the
PC to have one unique address, or for programmes running on the PC each to have their own IP address?
For example Chrome and Edge to have different IPv6 addresses?
WhatsApp and Signal to have different IPv6 addresses?
TIA
** Strictly per interface, but a "PC" will typically only have one interface.
Capturing this thought in passing.
IPv6 was designed (IIRC) so that users would never ever run out of IP addresses.
So each smart device in your home could have their own address, no need to share using NAT.
For a PC such as this (and no, VM don't support V6) would you expect the
PC to have one unique address, or for programmes running on the PC each to have their own IP address?
For example Chrome and Edge to have different IPv6 addresses?
WhatsApp and Signal to have different IPv6 addresses?
One* (global) address per PC** would be usual. Theoretically, you could allocate
multiple global IPs and get each application to bind to a specific one, but I dobut malware like Chrome/Edge/WhatsApp/Signal etc. exposes this functionality.
** Strictly per interface, but a "PC" will typically only have one interface.
Ian
<${send-direct-email-to-news1021-at-jusme-dot-com-if-you-must}@jusme.com> wrote:
One* (global) address per PC** would be usual. Theoretically, you could
allocate multiple global IPs and get each application to bind to a
specific one, but I dobut malware like Chrome/Edge/WhatsApp/Signal etc.
exposes this functionality.
You often have more than one IPv6 address. One stable one for
'incoming'
traffic (servers running on the machine) and another for 'outgoing'
traffic,
that changes regularly. This prevents fingerprinting you based on the
IP (where otherwise websites would be able to 'see behind' the router
and fingerprint devices, whereas it all appears from the same NATted
IPv4).
Because you may have pre-existing connections from an old outgoing IP,
that may hang around even if new connections use its successor(s). So
your interface may have a series of addresses associated.
If you wanted to keep them separate, you could coerce say Facebook and Whatsapp apps to use different outbound IPs so they couldn't correlate traffic between the two. That would either require some tweaks with the network stack, or have them run in containers and then pass through
traffic.
** Strictly per interface, but a "PC" will typically only have one
interface.
More than you think - wifi, ethernet, LTE, bluetooth, USB network
adapters...
Theo
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