No SNMP ifHCInOctets counters for ipsec interfaces

[Victor Gamov]

Hi All

In my FreeBSD 11.2-STABLE #0 r339734 I have no SNMP ifHCInOctets 
counters for ipsec interfaces:

=====
IF-MIB::ifName.1 = STRING: vmx0
IF-MIB::ifName.2 = STRING: vmx1
IF-MIB::ifName.3 = STRING: lo0
IF-MIB::ifName.4 = STRING: vlan102
IF-MIB::ifName.6 = STRING: ipsec1632
IF-MIB::ifName.8 = STRING: enc0
IF-MIB::ifName.9 = STRING: ipsec1614
IF-MIB::ifName.10 = STRING: ipsec20016


IF-MIB::ifInOctets.1 = Counter32: 63580689
IF-MIB::ifInOctets.2 = Counter32: 2466393770
IF-MIB::ifInOctets.3 = Counter32: 338773
IF-MIB::ifInOctets.4 = Counter32: 2273962037
IF-MIB::ifInOctets.6 = Counter32: 839822061
IF-MIB::ifInOctets.8 = Counter32: 3206656133
IF-MIB::ifInOctets.9 = Counter32: 985675403
IF-MIB::ifInOctets.10 = Counter32: 434465084


IF-MIB::ifHCInOctets.1 = Counter64: 21538014781
IF-MIB::ifHCInOctets.2 = Counter64: 19645260518
IF-MIB::ifHCInOctets.4 = Counter64: 19452829789
=====


Is it bug or known feature?


-- 
CU,
Victor Gamov