Ok figured out how to allow mms picture messages in chatty through ipv6 not tunnelled through openvpn, while not leaking ipv6 online in browser as much by setting ipv4 preference still being mostly tunneled through openVPN. I think thats a good compromise, maybe something purism could set as default:
/etc/gai.conf/
The default is:
precedence ::1/128 50
precedence ::/0 40
precedence 2002::/16 30
precedence ::/96 20
#precedence ::ffff:0:0/96 10
For sites which prefer IPv4 connections change the last line to
precedence ::ffff:0:0/96 100