The ISATAP #9 is related to Internet Protocol 6, which can cause issues with devices that don't use it and can safely be uninstalled as most networks today still use IPv4.
To remove IPv6 and all of it's associated devices:
Go into the properties for each network adapter, wired and wireless, and either uncheck the box next to Internet Protocol 6 (TCP/IPv6), that will disable it, or select it and click uninstall, which will remove it off the computer. Then go into device manager and remove any 4to6 adapters, WUN miniport adapters, or ISATAP adapters. Then reboot your computer.
If that does not work, try this:
To reset the TCP/IP stack go to this article and either click on "Fix it for me" or follow the instructions to fix it yourself:
How to reset Internet Protocol (TCP/IP)
