Hi,
tnx for the answer. I tested the proxy-arp feature however it did not work. About the topology, the Mikrotik is not a VPN server, it is just a client connected to a NAS that acts as OpenVPN server. The connection is established correctly btw them. The iroute is working as I set the username as common-name even if I'm not using certificates for the authentication. I know Mikrotik does not support TLS auth yet. Attached to the Mikrotik I have a device I'm trying to reach out from another remote device attached to the VPN too.
Device A ---> MIKROTIK --- via VPN ---> NAS <--- via VPN --- Device B
following the export you were mentioning
# may/16/2022 19:06:24 by RouterOS 6.47.10
# software id = XXX
#
# model = RB931-2nD
# serial number = XXX
/interface ovpn-client
add cipher=aes256 connect-to=xx.xx.xx.xx mac-address=XX:XX:XX:XX:XX:XX name=ovpn-out1 password=XXX user=XXX
/interface bridge
add admin-mac=XX:XX:XX:XX:XX:X arp=proxy-arp auto-mac=no comment=defconf name=bridge
/interface wireless
set [ find default-name=wlan1 ] band=2ghz-b/g/n channel-width=20/40mhz-XX disabled=no distance=indoors frequency=auto installation=indoor mode=ap-bridge ssid=MikroTik-19EDBE wireless-protocol=802.11
/interface list
add comment=defconf name=WAN
add comment=defconf name=LAN
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/ip pool
add name=default-dhcp ranges=192.168.88.10-192.168.88.254
/ip dhcp-server
add address-pool=default-dhcp disabled=no interface=bridge name=defconf
/interface bridge port
add bridge=bridge comment=defconf interface=ether2
add bridge=bridge comment=defconf interface=ether3
add bridge=bridge comment=defconf interface=pwr-line1
add bridge=bridge comment=defconf interface=wlan1
add bridge=bridge interface=ovpn-out1
/ip neighbor discovery-settings
set discover-interface-list=LAN
/interface list member
add comment=defconf interface=bridge list=LAN
add comment=defconf interface=ether1 list=WAN
/ip address
add address=192.168.88.1/24 comment=defconf interface=bridge network=192.168.88.0
/ip dhcp-client
add comment=defconf disabled=no interface=ether1
/ip dhcp-server network
add address=192.168.88.0/24 comment=defconf gateway=192.168.88.1
/ip dns
set allow-remote-requests=yes
/ip dns static
add address=192.168.88.1 comment=defconf name=router.lan
/ip firewall filter
add action=accept chain=input comment="defconf: accept established,related,untracked" connection-state=established,related,untracked disabled=yes
add action=drop chain=input comment="defconf: drop invalid" connection-state=invalid disabled=yes
add action=accept chain=input comment="defconf: accept ICMP" disabled=yes protocol=icmp
add action=accept chain=input comment="defconf: accept to local loopback (for CAPsMAN)" disabled=yes dst-address=127.0.0.1
add action=drop chain=input comment="defconf: drop all not coming from LAN" disabled=yes in-interface-list=!LAN
add action=accept chain=forward comment="defconf: accept in ipsec policy" disabled=yes ipsec-policy=in,ipsec
add action=accept chain=forward comment="defconf: accept out ipsec policy" disabled=yes ipsec-policy=out,ipsec
add action=fasttrack-connection chain=forward comment="defconf: fasttrack" connection-state=established,related disabled=yes
add action=accept chain=forward comment="defconf: accept established,related, untracked" connection-state=established,related,untracked disabled=yes
add action=drop chain=forward comment="defconf: drop invalid" connection-state=invalid disabled=yes
add action=drop chain=forward comment="defconf: drop all from WAN not DSTNATed" connection-nat-state=!dstnat connection-state=new disabled=yes in-interface-list=WAN
/ip firewall nat
add action=masquerade chain=srcnat comment="defconf: masquerade" ipsec-policy=out,none out-interface-list=WAN
add action=masquerade chain=srcnat out-interface=ovpn-out1
/ip route
add distance=1 dst-address=10.8.0.0/24 gateway=ovpn-out1
add distance=1 dst-address=192.168.88.0/24 gateway=ovpn-out1
/system clock
set time-zone-name=xxx
/tool mac-server
set allowed-interface-list=LAN
/tool mac-server mac-winbox
set allowed-interface-list=LAN
/tool sniffer
set filter-ip-protocol=icmp