vmk50: what is it?

NSX-t 2.4

Just configured an overlay transport  zone on some ESXi hosts.

I see th vmkernel ports created on every host:

vmk10 (ip from my IP pool): is the TEP vmkernel, it provides incapsulation/decapsutaltin

vmk50 (ip 169.254.1.1): what is it?

Thanks in advance

M