Which Shaw router do you have? Motorola SB5101? Hitron? BlueCurve Total?
Is your computer running Windows 8 or Windows 10 or some variant of Linux? or Mac OS?
On your Windows computer, change the "networking" settings to disable the "IPv6" interface on the adapter. Your computer will then use the "classic" IPv4 to send DHCP-requests to your Shaw router, and your router will return an IPv4 address to your computer. This will eliminate those error-messages.
Note that even if you use "IPv6" on your computer, your Shaw router communicates using "IPv4" with the Shaw network. So, currently, there is no real advantage to enabling "IPv6" on your computer.