I use these commands
cardano-node run \
–topology testnet-topology.json
–database-path /db
–socket-path /db/node.socket
–host-addr x.x.x.x
–port 3001
–config testnet-config.json
–shelley-kes-key kes.skey
–shelley-vrf-key vrf.skey
–shelley-operational-certificate node.cert
I use my ipv4 in host addr …