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Joined 1 year ago
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Cake day: August 8th, 2023

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  • 4am@lemm.eetoExplain Like I'm Five@lemmy.worldELI5: ipv6
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    5 days ago

    MAC addresses are link-local device identifiers, used by the switches and routers and WiFi access points that talk directly to the devices in question. Switches and routers maintain a table of which MAC to send a packet to based on the IP address - I.e. which actual port to send the data frames down.

    There is DHCP for IPv6, but the IPv6 stack is supposed to be able to detect which subnet it’s router is in and then just pick addresses on its own (it does look for conflicts before committing to an address). This is called SLACC (stateless address auto configuration).

    NAT is unnecessary because there are so many addresses, as others have mentioned; but I did want to point out that NAT is not used for security. Just because it obscures your devices does not make them any safer. All IPS routers have a firewall to one degree or another (could be as simple as “no incoming connections”; which is bad and lazy but it happens). Firewalling - examining incoming traffic against a set of rules for allowing or denying - is the correct way to secure any network, IPv4 or IPv6.



  • 4am@lemm.eetoMicroblog Memes@lemmy.worldSad truth
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    9 days ago

    I see what Americans have been conditioned into believing is “left wing” - aka neoliberalism - but absolutely none of it save for a few streamers and podcasters are actually left.

    It’s all right of center and the difference is that the American “lefties” hide their imperialistic racism, or convince themselves they don’t have any.