Disable IPv6 Pi
From charlesreid1
edit /etc/sysctl.d/local.conf
and add the following lines:
net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 net.ipv6.conf.lo.disable_ipv6 = 1 net.ipv6.conf.eth0.disable_ipv6 = 1 net.ipv6.conf.eth1.disable_ipv6 = 1 net.ipv6.conf.ppp0.disable_ipv6 = 1 net.ipv6.conf.tun0.disable_ipv6 = 1