On Tue, Feb 14, 2023 at 03:07:08PM -0500, Michael Stone wrote: > On Fri, Feb 10, 2023 at 02:33:12PM +0000, Tim Woodall wrote: > > On Fri, 10 Feb 2023, jeremy ardley wrote: > > > you can ping them as in > > > > > > ping fe80::87d:c6ff:fea4:a6fc > > > > > > > ooh, I didn't know that worked. > > > > Same as > > ping fe80::87d:c6ff:fea4:a6fc%eth0 > > > > on my machines at least. No idea how it picks the interface when there's > > more than one. > > > > The interface seems mandatory for ssh for me: > > > > tim@einstein(4):~ (none)$ ssh fe80::1 > > ssh: connect to host fe80::1 port 22: Invalid argument > > tim@einstein(4):~ (none)$ > > You actually have an fe80::1 IP address on your system? That would be highly > unusual. If you don't, why would you expect it to respond?
Whether it responds or not is, I think, irrelevant here. The thing gets cut short by the -EINVAL, which stems from the missing interface specification (well, "zone index" in IPv6 jargon). Without zone index, an IPv6LL is (may be?) underspecified. So it would be fe80::1%eth0 or something similar. Cheers [1] https://en.wikipedia.org/wiki/IPv6_address#zone_index -- t
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