Also disable ipv6 for install

setup/so-functions

@@ -745,6 +745,14 @@ disable_auto_start() {
 	fi
 }
 
+disable_ipv6() {
+	{
+		info "Disabling ipv6"
+		sysctl -w net.ipv6.conf.all.disable_ipv6=1
+		sysctl -w net.ipv6.conf.default.disable_ipv6=1
+	}  >> "$setup_log" 2>&1
+}
+
 disable_misc_network_features() {
 	filter_unused_nics
 	if [ ${#filtered_nics[@]} -ne 0 ]; then