turn off ipv6

ipv6 not working in k8s

2024/03/01 14:49:49 [error] 35#35: *207752 connect() to [2a00:1450:400b:c01::63]:443 failed (101: Network is unreachable) while connecting to upstream, client: 10.100.75.223, server: _, request: "GET /verify?g-recaptcha-response=03AFcWeA7rzkqpKaibBEHDxzOJTZ6_ns3D_wEEVpYMjNFL3WxxdoA9eKhVE-BDK55hBfEE43BLytpvzQHpzDblqWU4KCQDiBiKODzLeKTJDV7kJx2emzPvgC1qX20CroPcl8B7tcZ_vffInQB1y6ui-uxUaZOafE2CkZ0hOsKzASzUvE_SPGbjCvHEFPPdkAqvE5DmDBFKo9aiTYYn6hOnAhK5bSvuaRKXumTxotZvuZsX-_0l-UUB9iMu3ek_VFXvOmIOmzECZpCvtLN_dWFPj78hjJvQrx-mVbuDc-szpgRrW16BC65b7F17jeLsAmKw14dm6SPDep5ahwryhsBvH1x2HtI1xijY_c0g-WK0vH6g4-7SecNSRld5vH2WLu_REdiXqKrs5luy0KaSzSFY2-y1CHtZeF1B-7EViLsP0NPqgSbpvQS1X01k0GF1VetFl99Yl0oH6HtEbI2bXV1sc06JBRmZwfGwPUqdcNAFIynwpi9m_WIlNDuTZio01Wvi8YibUrLJKgvQnm8lg3R-BcDnvoTvYVpBayYXa8bgHXYYPPicrSJmHPA-3ocF50vqKcfNFG0hpfLa5X6gZriv9oIYtfAhFod4AfkpiOET0kTPUKXxodGMJXzC4mrxXTtnJr2Dt5agg52rMOmam1Yd3CQFu0gYyty-og HTTP/1.1", subrequest: "/recaptcha/api/siteverify", upstream: "https://[2a00:1450:400b:c01::63]:443/recaptcha/api/siteverify", host: "auction-creator-sandbox.prozorro.sale", referrer: "https://auction-creator-sandbox.prozorro.sale/"