IFOCTL_DROPS: sysctl operation not supported

[Martijn van Duren]

Found this one by because snmpd returns an invalid varbind on my laptop.
Doing some digging I found the following:
Error message:
mib_iftable: iwm0: invalid ifq: Operation not supported
mib_iftable: em0: invalid ifq: Operation not supported

sysctl mib:
{ CTL_NET, PF_INET, IPPROTO_IP, IPCTL_IFQUEUE, IFQCTL_DROPS };

file: usr.sbin/snmpd/mib.c:1198

I'll look at why snmpd returns an invalid packet later, but did anything
change in packet drop land that could've caused this?

martijn@