/etc/rc.d/dumpon runs before netdump can be configured

[Mark Johnston]

On Thu, Sep 12, 2019 at 11:32:23AM -0400, Ryan Stone wrote:
> Hi everyone,
> 
> I recently tried enabling the netdump client on a system via rc.conf.
> However, this isn't working for me because dumpon runs before netif,
> and netdump requires the interface to have been ifconfig'ed up before
> it will allow netdump to be enabled on an interface.
> 
> As a result, I get this message during boot, and have to manually run
> "service dumpon start" after boot to get netdump configured.
> 
> dumpon: Unable to configure netdump because the interface's link is down.
> 
> I'm not sure what the best way to clean this up is.  Moving dumpon to
> later in the boot process would be a POLA violation for people dumping
> to disk.  Perhaps we need a separate netdump_client rc.d script?

What exactly is the POLA violation there?

A separate rc script could be helpful for static network
configurations.  For DHCP, I don't see a good solution other than to use
/etc/dhclient-exit-hooks; there is an example for this in the dumpon(8)
man page.