Binding to both IPv6 and IPv4 at same time and IPv6 upstream support

Hey.

I'm trying to bind to both IPv6 and IPv4 at the same time, but can only get one and one work for a DoH proxy thatt is connected from pihole

For IPv4
`CLOUDFLARED_OPTS= --port 5053 --upstream https://1.1.1.1/dns-query --upstream https://1.0.0.1/dns-query
`
For IPv6
`CLOUDFLARED_OPTS= --address ::1 --port 5053 --upstream https://1.1.1.1/dns-query --upstream https://1.0.0.1/dns-query
`
Tried both

`CLOUDFLARED_OPTS= --address ::1 127.0.0.1 --port 5053 --upstream https://1.1.1.1/dns-query --upstream https://1.0.0.1/dns-query`

and

`CLOUDFLARED_OPTS= --address ::1 --address 127.0.0.1 --port 5053 --upstream https://1.1.1.1/dns-query --upstream https://1.0.0.1/dns-query`

None of them work it there some other config that will do this? normally ::1 should cover both but in this case when I do a dig @::1 -p 5053 works but dig @127.0.0.1 -p 5053 only IPv6 gives a response.

Using
cloudflared version 2019.11.0 (built 2019-11-07-1631 UTC)

workaround is to start two instances or cloudflared one for each protocol.