[ip route unreachable] Simulate dropped data or unreachable destination with ip route

ip_route.txt

# blackhole all packets destined for 192.168.2.1
ip route add blackhole 192.168.2.1
# to delete the same route, replace add with del
ip route del blackhole 192.168.2.1


#Depending on your use case, an unreachable route may work better, as it returns ICMP-unreachable instead of discarding the packets, although they tend to have the same effect.
ip route add unreachable 192.168.2.1