Thanks SD, however when I look at the attached devices page on the router page, it shows the IPv4 address (192.168.0.2) with my hexadecimal MAC address and again in the IPv6 column same addresses. I know, what little I do know!, that IPv6 is the new kid on the block due to numbering limitations with IPv4. Why would they both be in use at the same time and not just you're either the old v4 or the new v6 ?
SHJ