See whether your device currently connects over IPv4, IPv6, or both — useful for troubleshooting connectivity issues.
IPv4 addresses (like 203.0.113.5) are the older, more limited address format. IPv6 (like 2001:db8::1) is the newer standard built to support far more devices. Most connections today use IPv4 or a mix of both.
For everyday browsing, no — both work fine. Some networks and services perform slightly better on IPv6 where it's fully supported.