linux 禁用ipv6

sudo sysctl -w net.ipv6.conf.all.disable_ipv6=1

vi /etc/sysctl.conf添加下面的行：net.ipv6.conf.all.disable_ipv6=1
sysctl -p

echo "net.ipv6.conf.all.disable_ipv6=1" >> /etc/sysctl.conf
sysctl -p