what's FIP net-ns for in the DVR
I just start to try kilo with DVR, and the SNAT and FIP net-ns are introduced as DVR is used, I can understand why SNAT net-ns exist, but what's FIP net-ns for?
Internal router still handle the SNAT/DNAT if the floating IP is assiagned as before, but why the next hop is different net-ns like FIP, I don't see any special handling in the FIP, in opposite, for every floating IP, there is a static route like "10.10.10.20 169.254.31.28 255.255.255.255 UGH 0 0 0 fpr-05656c3a-8" to guide incoming traffic from FIP to router, so why not directly connect route to br-ex?
who knows reason the FIP is introduced? thanks in advance.