* netlink plugin: The new `netlink' plugin connects to the Linux
kernel using a netlink socket and uses it to query information about
interfaces, qdiscs and classes.
+ * rrdtool plugin: The cache is now dumped to disk in an extra thread
+ to not block data collection.
* snmp plugin: The new `snmp' plugin can read values from SNMP enabled
network devices, such as switches, routers, thermometers, rack
monitoring servers, etc. The collectd-snmp(5) manpage documents this