can't connect to an ipv6 though a proxy ipv4

[halrick13]

Test with only 1 proxy ipv4

my profixied app does connect to various servers which i don't know and can't change

all connects to an ipv4 are ok, but all connect to ipv6 fail

[proxychains] Strict chain ... 185.xxx.yyy.zzz:7492 ... 128.xxx.yyy.zzz:50002 ... OK
[proxychains] Strict chain ... 185.xxx.yyy.zzz:7492 ... xyz.com:50002 ... OK
[proxychains] Strict chain ... 185.xxx.yyy.zzz:7492 ... 2a03:zzzz:2:f0::c4:b001:50002 <--socket error or timeout!
[proxychains] Strict chain ... 185.xxx.yyy.zzz:7492 ... 2600:zzzz:4030:a25e:::50002 <--socket error or timeout!

[rofl0r]

is your proxy configured to support ipv6 ?