Nicolas, Thanks a lot, for the clarification.
On Fri, 6 Sep 2019 at 20:26, Nicolas Dichtel <nicolas.dich...@6wind.com> wrote: > > Le 06/09/2019 à 07:08, dhan lin a écrit : > > 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? > ifi_change indicates which flags (ifi_flags) have changed. > It does not cover other changes. > > > Regards, > Nicolas