Worked on the firecracker-microvm/firecracker repository to address a critical networking issue affecting virtual machine egress connectivity. Focused on Linux networking and shell scripting, the developer identified and resolved a bug by adding a MASQUERADE rule to the NAT table, restoring proper outbound traffic for VMs using the 192.168.241.1/29 subnet. This fix ensured that VM network packets were correctly translated, enabling full external reachability and reducing support incidents. The work included updating Markdown documentation to reflect the new iptables configuration, aligning technical guidance with the codebase and helping prevent future regressions in VM network stability and scalability.