My proposal included one main task: Development of nft-sync tool.
While I have been working on this tool, the tangible work product is scarce because I am testing new approaches to address the problem of rule-set synchronization.
Nevertheless my mentor has been sending me other tasks, so I have contributed in several areas of the netfilter project (linux kernel, libnftnl, iptables and nftables) adding new features and fixing errors.
Contributions (per project):
Some of my work may still be under review or may not have been included in the mainline yet, but all my contributions can be found here.