Does PHBot accept ipv6 proxies?
No, only Ipv4/5
There is no IPv5. There is IPv4, IPv6 and SOCKS 4, 5.
so is it working with ipv6 + socks 5 or not?
No. You need IPv4. Silkroad does not support IPv6.
do ipv6 proxies work now? or still not supported?
Silkroad only supports IPv4 and there are no IPv6 addresses in their DNS records so it wouldn’t work anyway.