Timeline for must an IPv6 router have an IP address in the SLAAC prefixes it's advertising?
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 11, 2023 at 12:55 | comment | added | psmears | @RonMaupin: Surely an interface route would tell the router the prefix is on-link? | |
| Sep 10, 2023 at 19:32 | comment | added | Ricky | Routing can be done without an interface address. The complexity will be in configuring the router to announce an unbound prefix. You can do that with radvd, but that's not really "a router". NDP will still work from a lladdr; that's the beauty of link-local addressing. | |
| Sep 10, 2023 at 15:23 | comment | added | unixwitch | that's the part i was missing. thanks! | |
| Sep 10, 2023 at 15:04 | vote | accept | unixwitch | ||
| Sep 10, 2023 at 15:00 | comment | added | Ron Maupin♦ | No, because the router would not know that prefix is on-link. It needs to know what is on- or off-link so that that it can use things like NDP properly. Layer-3 packets need to be encapsulated into layer-2 frames, and packets for on-link hosts get frames addressed directly to the host at layer-2, while frames for off-link hosts get addressed to a gateway at layer-2. | |
| Sep 10, 2023 at 14:53 | comment | added | unixwitch | thanks. the issue of routing packets to the prefix did occur to me, but that could be solved by (for example) adding an interface route for the prefix, right? or not? (i'm not suggesting this is necessarily a good idea, i'm just wondering if it's technically permissible.) | |
| Sep 10, 2023 at 14:50 | history | answered | Ron Maupin♦ | CC BY-SA 4.0 |