PR 166255 - disable promiscuous mode warning via sysctl

[Nick Hibma]

Folks,

In PR 166255 [1]  it is suggested to allow disabling ‘promiscuous mode enabled’ warnings. It adds a sysctl to allow toggling this behaviour. I have a number of questions before I commit the patch:

	- are there any security related considerations wrt disabling this warning?

	- any other warnings that could be useful to disable/enable

	- is the sysctl name net.link.log_promisc_mode_change , to be set to 0 to disable, suitable (compare: net.link.ether.inet.log_arp_warnings)?

	- perhaps a different value for that sysctl to warn only the first time? Not warn again within the next 10 minutes? etc.

I’d appreciate your suggestions.

Nick Hibma
nick at van-laarhoven.org


[1] https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=166255 <https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=166255>