fix ipv6 check
fix ipv6 check

ukoinobita/shadowsocks,monokoo/shadowsocks,shadowsocksR-private/shadowsocksR,shadowsocksR-private/shadowsocksR,yalewoosoft/shadowsocks,monokoo/shadowsocks,miyouzi/ch-docker-ssr,kaneawk/shadowsocksr,ukoinobita/shadowsocks,loveward/yingsuo,yalewoosoft/shadowsocks,shadowsocksr-backup/shadowsocksr,kaneawk/shadowsocksr,miyouzi/ch-docker-ssr,shadowsocksr-backup/shadowsocksr,loveward/yingsuo,ZeroClover/shadowsocksr