L2TP over IPsec - server share without FQDN

Hello

I'm new with UTM9 and trying to figure out how to access network share without using FQDN
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Running UMT 9.310-11

Remote Access: L2TP with presharekey
Pool Network: VPN Pool (L2TP)

Local users

Firewall: VPN Pool (L2TP) - any - Internal network
Masquerading: VPN Pool (L2TP) - External (WAN)
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can not connect to network share without FQDN

\server1\share - can not connect
\server1.domain.local\share works

Tryed to change Pool Network to internal DHCP same problem
Tryed to add DNS suffix on VPN connection: domain.local

Some of the users have mapped drives \server1\share

Thanks

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