To which destination will a route appear in the Linux routing table after activating IPv6 on a router's network interface, even when no global IPv6 addresses have been assigned to the interface?
To which destination will a route appear in the Linux routing table after activating IPv6 on a router's network interface, even when no global IPv6 addresses have been assigned to the interface?
When IPv6 is activated on a router's network interface and no global IPv6 addresses are assigned, the router will automatically generate a link-local address. In practice, IPv6 link-local addresses use the prefix fe80::/64. This prefix is sufficient for unique address generation based on the interface's MAC address or another unique identifier, ensuring local communication within the same subnet.
D: FE80/64
I just tested here and can confirm it's actually fe80::/64 I've installed a couple of VMs and checked the route with (route -6) and that's the only one that comes up from the options there
yes its D!!
I guess A is correct. Look: https://www.cisco.com/c/en/us/support/docs/ip/ip-version-6-ipv6/113328-ipv6-lla.html
This cisco article describes in what range a link local address is - but the used adresses are in 64-bit subnet. Think about this: 10.0.0.0/8 is an a-class ipv4 network, but most people use 10.x.x.0/24 ranges.
I think it's A. fe80::/10 Even if you don't assign any IP that's the localhost IPv6
localhost is ::1 for IPv6.
D is correct!
The answer can be find in the learning material: https://lpic2book.github.io/src/lpic2.212.1/?h=link+local#private-network-addresses
Definitely: D. fe80::/64
IPv6 link-local addresses are defined by RFC 4291 (IPv6 Addressing Architecture) and are covered by the prefix fe80::/10. In practice, only fe80::/64 is used. https://labs.ripe.net/author/philip_homburg/whats-the-deal-with-ipv6-link-local-addresses/
confirmed ! D: FE80/64