This message was posted on behalf of Intel Corporation
I understand that you have unit which is having problems with connecting to an specific router.
According to what I understand in what you have explained is that there is some sort of connection problem between the router and the system. In this case, that seems to be something that must be configured within the router itself since the system works properly with the other routers. We do not have any tool to "blacklist" a router, and I was checking Windows* but there does not seem to be a way either.
Also, I would like to mention that we need as well, more information of the system in order to troubleshoot further. If possible, please provide us with an System Support Utility report. You can generate that report by downloading the tool in the link below:
You can attach that report to this thread for further assistance and/or troubleshooting if applicable.
I hope to hear from you.