Unknown Direct Connected route on UDLR

Hello,

I am working with routing between UDLR and ESGs (NSX 6.4.3), I noticed an unknown route record as following:

Show IP route:  shown all connected and dynamic routes, but the weird is the below route:

Noting that UDLR has the following interfaces only:

Show IP address: shown an vNIC with the following subnet:

Can you advise about the role and the reason of this vNIC ? is it normal ?

Thanks in advance,