Worked on the DragonBluep/openwrt repository to address Ethernet auto-negotiation stability for edge networking hardware, focusing on the Ruckus ZoneFlex 7025. Using C and leveraging expertise in embedded systems and firmware development, implemented a targeted fix in the ath79 driver to cap PHY speed at 100 Mbps. This approach resolved unreliable uplink establishment caused by the AR7240 switch’s incorrect gigabit advertisement, eliminating intermittent link flaps and the need for manual speed configuration. The solution improved network reliability and device uptime, directly reducing support overhead for connected devices. The work demonstrated careful analysis and precise intervention in a complex networking environment.