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thanks lain (rule) (lemmy.blahaj.zone)

submitted 4 months ago by Interstellar_1@lemmy.blahaj.zone to c/196@lemmy.blahaj.zone

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[-] OsaErisXero@kbin.run 23 points 4 months ago

That is not what that means, it means there's no dhcp on that network segment.

[-] joyjoy@lemm.ee 17 points 4 months ago

In my defense, whenever there's a networking issue, it's always DNS related.

[-] 4am@lemm.ee 43 points 4 months ago

The three stages of grief:

It can’t be DNS
There’s no way it could be DNS
It was DNS

[-] prex@aussie.zone 14 points 4 months ago

[-] OsaErisXero@kbin.run 4 points 4 months ago

DNS being down is why the DHCP server didn't start ;)

[-] prex@aussie.zone 2 points 4 months ago

I can totally see dnsmasq causing this sort of thing.

[-] Neato@ttrpg.network 1 points 4 months ago

If there isn't DHCP and you device isn't set for a static IP, would it even connect?

[-] OsaErisXero@kbin.run 1 points 4 months ago

So, no... but also yes.

You're correct that it's unlikely that the device connecting to the network would be able to reach the outside Internet, but it would still be able to reach any local resource to itself, which is to say any other device which is in its network segment and also in the same state (DHCPless) that it is, via what's referred to as a link-local address. These are in the 169.254.x.x/16 or fe80::/10 space and allow devices to self-assign addresses independent of upstream connectivity for communication on the local network segment. Usually, these aren't useful, but these address are consistent, and can be used to directly contact known local hosts from your machine without DHCP. As to whether or not they can reach upstream hosts in this state, the answer is 'probably not', but that's not the same as what you said.

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