Subject: Re: Mixing current userspace with 1.5 kernel
To: B. James Phillippe <>
From: Steven M. Bellovin <>
List: netbsd-users
Date: 03/13/2002 22:35:24
In message <Pine.LNX.4.31.0203131555220.19589-100000@uranus.terran>, "B. James 
Phillippe" writes:
>I would like to know what the general consensus is on the ability to "fall
>back" to a stable kernel when running in -current userspace.  I am a
>new-to-NetBSD convert from Linux :-) and my frame of referencce is that it
>was not uncommon to get "stuck in the middle" when trying to track
>development kernels; if the dev kernel was broken in some way that required
>booting into the stable kernel, some of the user-space bins/libs needed to
>be swapped as well.  I'm just curious to know if I'm in for a repeat
>experience if I attempt to track NetBSD-current.
My understanding is that that won't work well -- -current userland 
often relies on new kernel features that 1.5.x kernels don't have.

		--Steve Bellovin,
		Full text of "Firewalls" book now at