@gamergirl306 -- a "flood" of a "ton" (almost 13000) packets observed on October 13th is MUCH LESS than what you would see if there was a DDOS targeting your IPv6 IP-address. Think of 13000 packets per minute, or 13000 packets per second -- that is the volume of packets that are below the bottom-end of a DDOS attack that would "overwhelm" your cable-modem.
If you are downloading on a "Shaw Gig" connection, that is up to 1000 Megabits per second that your router is receiving, and routing to your computer. If each IP-packet is, say, 100 bits, then your router would be processing 10 Million packets per second. Instead, if each IP-packet is a very-long 1000 bits, then your router would be processing 1.0 Million packets per second. Any DDOS attempt needs multiple computers each sending millions of packets per second -- a measly 13000 packets is barely noticeable.
Getting Shaw to give you a different cable-modem will change your IPv4 and IPV6 addresses.