FreeBSD when change your router, update /etc/resolv.conf

<-----69------------------------------------------------------------>

Last update : 2023-07-29

In occations that the local network router has changed,
Make sure that in /etc/resolv.conf the system is looking to the
proper IP address for the nameserver.

In my case
% vi /etc/resolv.conf

Revise line
nameserver 192.168.0.1

to
nameserver 192.168.50.1
same IP as the router's in the local network.

:x

# /etc/netstart

It saved my day today!