Hello, I managed to make AdGuardHome work.
But I don't really know how.
For that, I removed the previous jails.
I reinstalled the AdGuardHome plugin. I got a "successfull" message which informed that the administration page was at 192.168.1.90, which is in fact the ip address of the truenas web interface. => impossible to access the administration interface of AdGuardHome.
Then I went to the jails settings.
I then configured the jail as
@Alecmascot gave in his post
#8., but for some reason, when I started the jail, I got the message "vnet_failure", while my previous jails had started with this configuration.
Then I checked the box "DHCP autoconfigure ipv4". The jails started well with this configuration, while it had not succeeded in my previous jail, I had each time an error message. I then tested the IP address that the router assigned to me; => BINGO, I had access to the administration interface of AdGuardHome. Moreover, the IP address appeared in the administration interface of my router (on the same LAN as the IP address of the Truenas web interface, so there were two IP addresses assigned to LAN 4)
Finally, as I deon't like DHCP, I wanted to test again the
@Alecmascot configuration with a fixed ip. The configuration worked well too. However, I don't see the ip address in the router administration interface anymore, only the ip address of Truenas.
I have one more small question :
I never really understood what to put in the subnet mask.
What value should be put and if you have an explanation (so I can understand)
Thank you very much