Visit Stack Exchange I'm running into a bizarre issue with a router on my local university.There is one wireless router near the classroom where I have most of my classes that has a dhcp server running that gives out the self-assigned ip address that it's currently using for itself.
To fix Internet not working error due to the self-assigned IP address on Mac, you will have to wipe out some files.
Manually assigning a known good IP and still not being able to browse means your computer is blocked from accessing the network.
RFC 3927 created a "private" pool of addresses that are assigned by the device itself when the DHCP process doesn't complete in time.
While configuration changes from migrating or restoring a system can lead to this problem, at other times major system crashes or power outages can do the same.
Many cable modems bridge only the first MAC address they see.