The article dives into advanced techniques for executing DNS rebinding attacks in modern browsers, specifically Chrome, Safari, and Edge, with a focus on exploiting IPv6. The author builds on a previous post that showcased a real-world exploit, now introducing methods that enable quick DNS rebinding, essential for applications where longer exploits are impractical. Traditional DNS rebinding often suffers from cache delays, where the time between successive DNS lookups can stretch to several minutes, depending on the network environment. The article highlights that using multiple A records in the same response can circumvent this issue but notes that browsers typically prioritize private IP addresses, making these techniques less effective. A critical technique for Safari involves manipulating DNS response delays. When Safari receives a delayed DNS response with a private IP after initially querying a public IP, it will first connect to the public server. This allows attackers to retrieve sensitive information from the local network once the DNS response for the private IP is processed. The author provides a step-by-step method to set up a custom DNS server that can exploit this behavior. For Chrome, the strategy relies on the browser's preference for loading pages over IPv6. By serving an A record pointing to a local server alongside a AAAA record for an attacker-controlled server, the attacker can achieve DNS rebinding effectively, taking advantage of Chrome's prioritization of public IPv6 addresses over private IPv4. The article also includes practical details, such as the timing for DNS responses—100 to 200 milliseconds for Safari—and a PHP script to automate the attack. Testing in Safari and Brave on iOS confirms the effectiveness of these methods for accessing internal network services. The author’s insights into browser behavior, especially regarding cache handling and IP prioritization, provide a solid foundation for understanding the evolving tactics of DNS rebinding in today’s web environment.