I've got a point of sale terminal/pinpad connecting to the internet through the ethernet port on my Mac mini, which has internet sharing turned on. It works... but it takes almost 5 minutes for my POS software to talk to the terminal. It used to work perfectly and then a few days ago it just started taking it's sweet A$$ time. Nothing changed. No bloody idea. I digress.

I feel like if the pinpad was on the same network than it would fix the issue.

Tried creating a bridge via terminal. Pinpad didn't get an address, but it's using DHCP so maybe that's the issue.

Tried creating a bridge through system preferences but that killed the internet to the Mac and still didn't give access to the pinpad.

The Ethernet connection in Network Preferences is yellow and says "self-assigned IP"

Please help! Thanks a bunch.

  • Have you tried rebooting your Internet Gateway (modem)? The self assigned address means it didn't get an IP address from your ISP/Gateway – Allan Sep 24 '17 at 1:04
  • yeah I have. doesn't make a difference. – SargeLunch Sep 24 '17 at 17:57
  • That makes a huge difference. Until that self assigned IP is resolved, you can't connect to the Internet through it. How are you connecting now? – Allan Sep 24 '17 at 21:57
  • The pinpad uses DHCP – SargeLunch Sep 26 '17 at 17:09
  • I don't know what that has to do with my comments. – Allan Sep 27 '17 at 21:37

In the end, after trying a dozen different things, this command in terminal fixed my problem. networksetup -setv6off Wi-Fi

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