Ubuntu / Debian · medium · solved in-browser (no VM needed) · 3 tiered hints
Write /home/player/70-bridge.yaml: a netplan v2 config with renderer networkd, an ethernet eth0 set to dhcp4: false, and a bridge br0 that enslaves eth0 (interfaces: [eth0]) and obtains its address via dhcp4: true. (Authored config, graded structurally — the engine isn't run here.)
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Debian-family specifics: apt, packaging and distro conventions.
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