I have a FreeBSD 11.1 iocage jail on a different subnet than the host and I want it to reach other hosts on the same subnet as the host.

Host IP: 192.168.0.10 (interface re0)
Default GW: 192.168.0.1
JAIL IP: 10.1.1.10

I have configured:

iocage set ip4_addr="re0|10.1.1.10/24" myjail
iocage set defaultrouter="192.168.0.1" myjail

From the jail I can ping the host 192.168.0.10, but cannot ping another hosts on the same network as the host, for example 192.168.0.1 (the gateway).

Any hint?.

All host in this network must know about route way to 10.1.1.10. On your main GW add path to 10.1.1.0/24 via 192.168.0.10. Or on specified host just add:

route add 10.1.1.0/24 gateway 192.168.0.10 

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