v1.9.2beta2

~因境外加密DNS已无法访问，将新手引导自动设置的fallback_DNS设置为国内加密DNS地址，担心泄露的用户请勿使用redir_host模式或配置第三方DNS服务
~修复导入/tmp目录下内核或配置文件时，无法识别可执行文件的bug

scripts/webget.sh

@@ -2316,7 +2316,8 @@ userguide(){
 	#设置加密DNS
 	if [ -s $openssldir/certs/ca-certificates.crt ];then
 		dns_nameserver='https://223.5.5.5/dns-query, https://doh.pub/dns-query, tls://dns.rubyfish.cn:853'
-		dns_fallback='https://1.0.0.1/dns-query, https://8.8.4.4/dns-query, https://doh.opendns.com/dns-query'
+		#dns_fallback='https://1.0.0.1/dns-query, https://8.8.4.4/dns-query, https://doh.opendns.com/dns-query'
+		dns_fallback=$dns_nameserver
 		setconfig dns_nameserver \'"$dns_nameserver"\'
 		setconfig dns_fallback \'"$dns_fallback"\'
 	fi