During January 2026, Sjer Red addressed kernel compatibility issues in the dagger/dagger repository by updating the Dagger Engine to support Linux kernel 6.17 and newer. They migrated the networking stack from legacy iptables to iptables-nft, implemented runtime detection for legacy xtables, and enhanced the CNI bridge to prefer nftables when legacy support was unavailable. Using Go, container orchestration, and networking expertise, Sjer’s work broadened platform compatibility to Talos Linux 1.12+, Arch Linux, Void Linux, and future RHEL 10 releases. This targeted bug fix improved deployment stability and reduced maintenance overhead, demonstrating depth in cross-distro kernel and networking adaptation.