In older EOS releases the ingress interface was always included in LAG hash calculations input together with other

LAG Hashing 4.26.0F

Introduced in EOS-4.20.1F, “selectable hashing fields” feature controls whether a certain header’s field is used in the hash calculation for LAG and ECMP.

Arista switches use the hashing algorithm to load balance traffic among LAG (Link Aggregation Group) members

TOI EOS 4.15.2F TTL Hashing