Can I use IPv4 destination addresses with an IPv6-only proxy? June 11, 2025 22:23 Updated No, IPv6 proxies only support IPv6 destinations. IPv4 targets will fail with connection errors. Related articles What is the difference between SOCKS5 and SOCKS5H? How to Use IPv6 Proxies with SOCKS5 and SOCKS5H How can I test if my SOCKS5 IPv6 proxy is working correctly? How to Connect Using Windows 10/11 Settings How to check if a website supports IPv6?