AWS second elastic IP not working after correct dhclient results

Question

EDIT: Solved, routing table did not update properly. as was answered.

On AWS and Ubuntu 16.04, a 2nd network interface is attached with 2nd elastic IP.

Instance

Answer 1

echo 2 > /proc/sys/net/ipv4/conf/default/rp_filter
echo 2 > /proc/sys/net/ipv4/conf/all/rp_filter

To make this change persistence

net.ipv4.conf.default.rp_filter = 2
net.ipv4.conf.all.rp_filter = 2

** Tested AWS Environment