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On link down toggle the netdev off/on to drain the TX DMA. As long as the link stays down, do not write packets to TX DMA.
This repository contains the Device Driver Environment for the "donator OS" iPXE available from http://ipxe.org/. For building DDE iPXE, you first need to fetch and patch the original sources. The 'prepare_port' tool automates this task. Just issue: ! ./tool/ports/prepare_port dde_ipxe Now, you need to include the DDE iPXE repository into your Genode build process. Just add the path to this directory to the 'REPOSITORIES' declaration of the 'etc/build.conf' file within your build directory, for example ! REPOSITORIES += $(GENODE_DIR)/repos/dde_ipxe After successful build the DDE iPXE based ethernet driver is located at 'bin/nic_drv'.