Why do I have recurring issues connecting to my colocated server running an older version of macOS?

If you are running OS X 10.9 or 10.10 on a mini you sent us to host, there is a network issue related to ARP in OS X which causes significant packet loss in redundant Cisco Networks. This needs to be patched in the OS X networking stack. In your dashboard, we’ve provided a tool for you to check the status of and apply the patch at any time. We've written an extensive blog article on OS X 10.9 Mavericks bugs covering this issue.

We don’t see the ARP issue much because 99.5% of the thousands of servers here are owned by us, and we install the patch as part of the deployment script on those operating systems.

If your server is colocated, we would not have installed the patch and do not check for it upon install. After we receive and bring your server Mac online, we suggest new colocation customers to navigate to the customer dashboard (Configuration Tab) and enable the ARP-Fix patch.

Please review the following post covering How to apply the ARP fix for colocated Macs and open a support ticket if you need further help.

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