Hi All, There is a field called ifi_change in "struct ifinfomsg". man page for rtnetlink says its for future use and should be always set to 0xFFFFFFFF.
But ive run some sample tests, to confirm the value is not as per man pages explanation. Its 0 most of the times and non-zero sometimes. I've the following question, Is ifi_change set only when there is a state change in interface values? >>My application is not interested in processing the netlink messages without >>any state changes. >>Can i add a BPF socket filter to drop all Netlink messages with ifi_change=0? with regards, dhanlin
