I suspected as much ... the output looks like this:
Code:
# snmpwalk -c public -v 2c localhost ifName IF-MIB::ifName.1 = STRING: usbus0 IF-MIB::ifName.2 = STRING: re0 IF-MIB::ifName.3 = STRING: usbus1 IF-MIB::ifName.4 = STRING: lo0 IF-MIB::ifName.5 = STRING: bridge0 IF-MIB::ifName.6 = STRING: epair0a