How should follks migrate from linux_base-c6 to linux_base-c7?

[Tijl Coosemans]

On Tue, 31 Dec 2019 05:28:39 -0800 David Wolfskill
<david at catwhisker.org> wrote:
> As noted in
> <http://docs.FreeBSD.org/cgi/mid.cgi?201912302038.xBUKcol9050658>,
> the -c6 ports "expire tomorrow."
> 
> I don't see a documented process for migrating from linux_base-c6 to
> linux_base-c7; perhaps I'm being thicker than usual.
> 
> For example, from prior migrations (e.g., the 20141209 entry in
> ports/UPDATING), there's a mention of:
> 
> |  2. Persistently update the Linux kernel version in /etc/sysctl.conf:
> |
> |     compat.linux.osrelease=2.6.18

This was needed when the default value was 2.4.<something>, but nowadays
the default is already higher than 2.6.18 so you can just remove this.
Besides that it's just a matter of removing c6 packages and installing c7
packages.