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Mar 27, 2020 at 12:27 comment added Tim Hilt I know why it worked! I didn't ping 172.31.255.254, but 172.31.255.253, which means i pinged myself. No wonder that worked
Mar 26, 2020 at 11:30 comment added Tim Hilt I tried it out. The ping still returns Destination Host Unreachable and the arping doesn't receive anything either. And you're probably right about me confusing subnet- and DNS-mask. I wonder why it worked before though!
Mar 26, 2020 at 11:24 history edited grawity_u1686 CC BY-SA 4.0
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Mar 26, 2020 at 11:19 comment added grawity_u1686 In your case, specifying a too-large subnet (too-short prefix length) shouldn't actually make the Arduino unreachable – it includes more than needed, but doesn't exclude what's necessary. (It can cause other problems though, such as being unable to reach 160.0.0.0–175.255.255.255 which are unnecessarily included.)
Mar 26, 2020 at 11:18 comment added Tim Hilt Thanks for the answer! I did indeed run ip addr .../4 .... Edited the question. Will try your solution out immediately.
Mar 26, 2020 at 11:15 history answered grawity_u1686 CC BY-SA 4.0