If you are accessing your repositories over the SSH protocol, you will receive a warning message each time your client connects to a new IP address for github.com. As long as the IP address from the warning is in the range of IP addresses , you shouldn’t be concerned. Specifically, the new addresses that are being added this time are in the range from
192.30.252.0 to 192.30.255.255. The warning message looks like this:Warning: Permanently added the RSA host key for IP address '$IP' to the list of
https://github.com/blog/1606-ip-address-changes