- Topology looks like this:

10.0.0.1                                                20.0.0.1
[host-1] --- [leaf-1] ---- [Spine 1] ---- [Leaf-2] ---- [Host-2]

- Traffic flows from Host-1 toward Host-2.

- Flood pings are being sent on the same vlan.

- 90% of the icmp traffic is getting dropped on the way.

- Regular pings work well.

- Other type of traffic appear to work well.

- EVPN type 2 routes from each of the hosts are seen correctly on the spines.

- No L1 issues on any of the transit links.

MTU configuration was missing on a few leaf nodes across the network. Adding the statement on the leaf and spine devices resolved the packet drops.

If you have a similar scenario make sure to check MTU hop by hop on every device along the path.