Before this commit, multiple L3 hosts were allocated if the same ip
address was seen with multiple mac addresses. We have decided to keep
ip and macs logically sepatated. For this reason, after this commit,
the L3 ip always remains the same even if there are changes in the
mac. A user who wants to monitor mac addresses can use the L2 section
as well as the host pools.
This commit also reverts:
"Add MAC address to the serialized hosts key to fix bad MAC address association and stats"
This reverts commit 89a756fb9a.
ntopng checks MySQL for the value of open_files_limit and engages
and alert if the worst case number of open files is greater
than or equal to the 80% of open_files_limit
Interfaces were handled globally before this commit. Now
alerts can be configured per-interface. So for example alerts
for the same host 193.168.2.1 can be handled differently on multiple interfaces.
Old alerts configured should be automatically migrated thanks to script startup.lua
This commits also paves the way to introduce stateful alerts in the professional version
