Telling FR to conect to postres vi IPv4

Hi, Our database team have just migrated a postgres db from Ubuntu 15.04 -> 18.04 postgres 10 my FR server ( Ubuntu 16.04 / FR 3.0.20) has had dual ip stacks for ages but I guess the postgres db server hasn't The new server does have ipv6 and now FR is trying to connect to it via ipv6.... and is getting rejected Two options 1). Set postgres up to accept connections from the new ipv6 address 2). Tell the FR end to use ipv4 Fairly certain its not a FR thing but underlying postgres config. So how do I tell my FR server to connect via ipv4 ? Rgds A