"status": "Not capable masternode: Could not connect to

[europound]

sentinel cannot connect to IPv4 from inside
I can connect to mn from outside ok
I can connect from inside mn to itself via 127.0.0.1 or 172., but not IPv4
why is that?

anyone had experience with docker?

e4658ba3ec87 747cb2d60bbe "bash" 5 months ago Up 2 days 0.0.0.0:9999->9999/tcp masternode

 

[europound]

how can I tell sentinel to connect to mn via localhost or 172. but not from ipv4 ?
sudo iptables -t nat -I OUTPUT -d MYIP -p tcp --dport 9999 -j REDIRECT --to-ports 9999

did not help