Symptom
N9500 is a Border Leaf and learns prefix 172.21.26.0/24 via BGP in vrf from a firewall outside the fabric and learns a default route from EVPN fabric in same vrf from another Border Leaf.
N0-DC1L-BLV-ZF-SV100# bcm-shell module 1 "l3 defip show" | grep 0.0.0.0
2304 3 0.0.0.0/0 00:00:00:00:00:00 100018 0 0 0 0 n <<<
3072 Global 0.0.0.0/0 00:00:00:00:00:00 149149 0 0 0 0 y
When 9500 received packet from L3Vni destined to 172.21.26.0/24 it incorrectly forward the packet using the default route programmed in VRF instead of sending it to fabric module which cause the packet to go into a loop.
Conditions
This issue is only specific to Nexus 9500.
Nexus 9500 running 7.0(3)I2(2e)
Workaround
Block default route from being learned from EVPN in VRF.
Further Problem Description
N/A
