Incomplete ARP Entry

Hi All

I have aproblem with UTM 9.

I changed my CIFS server and now all my vpn clients cannot acces.

From inside my LAN they can access, and from firewall I can do ping.

I see on ARP table that have an entry for my eth0 interface (with correct MAC), and one entry for eth1 interface (with incomplete entrance).

I think that my problem is with that interface

Do you know where the problem may come from?

Thanks!!