At a location with limited cabling, I've had to set up WiFi signal extenders to cover the whole area. Here is a crude diagram...

Internet - WiFi/Gateway - Extender 1 - Extender 2
                |                          |
          PC (ethernet)               WiFi device

I was able to successfully daisy-chain three together, and I can access the internet from WiFi devices connected to the farthest extender. Is this a supported configuration? If not, what kind of issues can arise from it? The reason why I ask is that the PC keeps reporting IP address conflicts, and I'm wondering if that's caused because of the way this is configured.

Additionally, I noticed that the extenders named their own SSID similar to the one they are connected to, but with a suffix. Would there be any issue in naming them all with the same SSID, to enable seamless roaming as you would with multiple standalone APs?