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trapping desktop boot messages on a laptop

Say I am not satisfied with the ability of dmesg and bootlogd etc. to
catch console messages as they flit by while booting my desktop

On a laptop I can run script(1) to catch everything, but how can I
hook it up to be /dev/tty1 of the desktop? It only has a ethernet
connector, no serial connector.

Reading BootPrompt-HOWTO and serial-console.txt of the kernel
documentation it seems I am out of luck.

I want to e.g.,
me@laptop$ script
Script started, file is typescript
me@laptop$ ssh desktop
me@desktop$ reboot console=`tty` #dream parameters

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