"Linux can be configured to log dmesg output to another system
via network using syslog. It is done using kernel level networking
stuff ia UDP port 514. There is module called netconsole which logs
kernel printk messages over udp allowing debugging of problem where
disk logging fails and serial consoles are impractical. Most modern
distro has this netconsole as a built-in module. netconsole
initializes immediately after NIC cards..."