As Kevo already mentioned, there is no A or AAA record for your nameserver.
Can you please execute the following commands on your system?:
udm dns/host_record list
udm dns/ptr_record list
this will list you all host- and ptr-records in your domain.
If there is no A or AAA record, you may add it via udm as described here:
# first define IP
IP="IP.OF.HOST.HERE"
# then define host-name
HOST="gateway.socratec.ca"
# create the a-record for forward-lookup -> hostname to ip
udm dns/host_record create --set name="$HOST" --set a="$IP" --superordinate "$(udm dns/forward_zone list |sed -ne 's/^DN: //p;T;q')"
# create the PTR-record for reverse lookup -> ip to hostname
udm dns/ptr_record create --set ptr_record="$HOST" --set address="$IP" --superordinate "$(udm dns/reverse_zone list |sed -ne 's/^DN: //p;T;q')"