AWS is set to start charging for IPv4 addresses on February 1st, 2024, with a cost of $0.005 per hour, which translates to around $4 per month. This change will likely have a significant impact on infrastructure companies that rely heavily on AWS, such as Supabase, which may need to implement workarounds or switch to IPv6 to avoid increased costs. The main challenge in adopting IPv6 is ISP support, with many ISPs not currently supporting the protocol, and this lack of support can lead to difficulties in resolving domain names and connecting to servers. Additionally, developer tools such as Docker require significant changes to support IPv6, making it a complex process for companies to adopt the new protocol. To mitigate these issues, Supabase is offering three solutions for its customers, including a paid add-on for IPv4 addresses and support from the company itself.