On Fri, Apr 27, 2018 at 08:52:35AM +0100, Roy Marples wrote: > Since NetBSD-5, I've modified the kernel to announce IPv6 address state > changes, introduced IPv4 address state changes which are also announced AND > added a layer of compat to the more generic RTM messages so that interface > address changes can report back PID and flags. In other words, while a 2k > buffer might have been fine for NetBSD-4 (and we'll never really know > because overflow errors were silently dropped) it might not be fine for a > router with many addresses that all become active with the internet decides > to work. This is an important part because of all the NetBSD machines I > have, the routing socket only overflows on my ERLITE router. The other > physical servers, laptops and VMs I have do not.
The very odd situation in which I saw those buffer overflows, is simply on a home machine, so flaky home broadband, running a pkg_rolling-replace. The machine has 32G of memory, but from your message that is irrelevant. The urtwmn0 was struggling (that's new BTW) and I kept having to /etc/rc.d/wpa_supplicant restart. While texlive was being downloaded, I hit ctrl-C, and then saw the reams of buffer messages. In terms of routing, there is just 1 default route. Maybe all the wpa_supplicant restarts and dhcpcd kicking in helped? (Doesn't really fit the picture...) Cheers, Patrick
