Host and domain name not shown on my network

hi to all,
thanks for your help.

this is my configuration:

set interfaces ethernet eth0 description 'Wan'
set interfaces ethernet eth0 hw-id 'xx:xx:xx:xx:xx:fe'
set interfaces ethernet eth0 offload gro
set interfaces ethernet eth0 offload gso
set interfaces ethernet eth0 offload sg
set interfaces ethernet eth0 offload tso
set interfaces ethernet eth1 address 'dhcp'
set interfaces ethernet eth1 description 'LAN'
set interfaces ethernet eth1 hw-id 'xx:xx:xx:xx:xx:b1'
set interfaces loopback lo
set interfaces pppoe pppoe1 authentication password xxxxxx
set interfaces pppoe pppoe1 authentication username xxxxxx
set interfaces pppoe pppoe1 description 'PPPoE Tim'
set interfaces pppoe pppoe1 source-interface 'eth0'
set nat source rule 100 outbound-interface name 'eth0'
set nat source rule 100 source address 'xxx.xxx.1.0/24'
set nat source rule 100 translation address 'masquerade'
set service ntp allow-client xxxxxx 'xxx.xxx.0.0/8'
set service ntp allow-client xxxxxx 'xxx.xxx.0.0/16'
set service ntp allow-client xxxxxx 'xxx.xxx.0.0/8'
set service ntp allow-client xxxxxx 'xxx.xxx.0.0/12'
set service ntp allow-client xxxxxx 'xxx.xxx.0.0/16'
set service ntp allow-client xxxxxx '::1/128'
set service ntp allow-client xxxxxx 'fe80::/10'
set service ntp allow-client xxxxxx 'fc00::/7'
set service ntp allow-client xxxxxx 'xxx.xxx.1.0/24'
set service ntp server xxxxx.tld
set service ntp server xxxxx.tld
set service ntp server xxxxx.tld
set service ssh port '22'
set system config-management commit-revisions '100'
set system console device ttyS0 speed '115200'
set system domain-name xxxxxx
set system host-name xxxxxx
set system login user xxxxxx authentication encrypted-password xxxxxx
set system syslog global facility all level 'info'
set system syslog global facility local7 level 'debug'
set system time-zone 'Europe/Rome'
set system update-check auto-check
set system update-check url xxxxxx

As you can see on the following IP scan of my network there is the host name for the OPNsense router but no host name shown for my Vies router :