AFAIK there is no way to turn off those messages in the default kernel. You could try to write a patch if you care: take a look at src/sys/netinet/if_ether.c, line #625.
Regards! 2017-11-09 9:14 GMT+01:00 OpenBSD <open...@me.com>: > Torsten, > > Thanks for responding to my question. > I know about this specific sysctl on FreeBSD. Used this one on pfSense as > well. The issue is that this one, or functional similar seems not available > on OpenBSD. > > Maybe someone else has run into this before and found a way? > > Marco PC > > > Op 8 nov. 2017, om 16:44 heeft torsten <tors...@cnc-london.net> het > volgende geschreven: > > > > > >> -----Original Message----- > >> From: owner-m...@openbsd.org [mailto:owner-m...@openbsd.org] On Behalf > >> Of OpenBSD > >> Sent: 08 November 2017 15:44 > >> To: misc@openbsd.org > >> Subject: Suppessing logging of arp movement messages > >> > >> hello all, > >> > >> I have finally build an internet gateway with OpenBSD 6.2 (AMD64), > >> including pf and IPSec. Great stuff. > >> Now I am seeing a lot of arp movement, that I know are caused by > >> Apple's Bonjour Sleep Proxy. > >> > >> Nov 8 00:00:27 gatekeeper /bsd: arp info overwritten for 192.168.20.99 > >> by 00:46:ab:ba:19:87 on vmx0 Nov 8 00:00:58 gatekeeper /bsd: arp info > >> overwritten for 192.168.20.99 by 9c:ab:3b:ca:fe:99 on vmx0 Nov 8 > >> 00:01:57 gatekeeper /bsd: arp info overwritten for 192.168.20.99 by > >> 00:46:ab:ba:19:87 on vmx0 Nov 8 00:02:04 gatekeeper /bsd: arp info > >> overwritten for 192.168.20.99 by 9c:ab:3b:ca:fe:99 on vmx0 Nov 8 > >> 00:02:35 gatekeeper /bsd: arp info overwritten for 192.168.20.99 by > >> 00:46:ab:ba:19:87 on vmx0 Nov 8 00:03:28 gatekeeper /bsd: arp info > >> overwritten for 192.168.20.99 by 9c:ab:3b:ca:fe:99 on vmx0 Nov 8 > >> 00:03:42 gatekeeper /bsd: arp info overwritten for 192.168.20.99 by > >> 00:46:ab:ba:19:87 on vmx0 Nov 8 00:04:27 gatekeeper /bsd: arp info > >> overwritten for 192.168.20.99 by 9c:ab:3b:ca:fe:99 on vmx0 > >> > >> These messages are repeating every 15-30 seconds for Apple devices like > >> laptops that are in standby (sleep mode). > >> > >> On pfSense and FreeBSD you have a sysctl: > >> net.link.ether.inet.log_arp_movements > >> when set to zero it will no longer log the messages. > >> > >> Discussions can be found on internet dating back to 2010, but no > >> solution has been provided for what I could find. > >> I have not yet found any sysctl in OpenBSD to do the same. Did I miss > >> something or does OpenBSD have any trick to not log these messages. > >> Currently these messages are filling up the logs /var/run/dmesg.boot > >> and /var/log/messages. > >> > >> Marco PC > > > > Mi Marco > > In freebsd is is usually done with > > sysctl net.link.ether.inet.log_arp_movements=0 > > > > and I guess this applies to openbsd too. > > T > > > >
