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through the list of kernel names it is configured to try. This way there is fallback if /netbsd is not present. netbsd is the first name to be tried anyway. Issue brought up on tech-kern@ by Patrick Welche <prlw1 AT cam ac uk> where a system without /netbsd hung on boot. Suggestion by rudolf <netbsd AT eq cz> https://mail-index.netbsd.org/tech-kern/2018/02/16/msg023122.html