RDP的IP隧道问题

我有一个IP隧道的问题。

服务器 ：

services01（proxmox主机）（内部ips：10.21.21.0/24）（tunnel ip 172.16.0.1）
backup01（proxmox主机）（内部ips：10.21.23.0/24）（tunnel ip 172.16.0.2）

虚拟机：

10.21.21.7 – 在services01上的VM1
10.21.23.4 – backup01上的VM2

问题：

scheme1.使用从backup01到VM2的KVMlogin。连接到10.21.21.7文件共享和下载任何约10 GB的文件，testingnetworkingfunction等 – 一切都很好，没有networking问题，速度〜1千兆位，没有超时。
scheme2.使用Microsoft RDP从10.21.21.7连接到10.21.23.4，不做任何事情， 每2-3分钟我就从RDP会话断开连接 ，然后重新连接。根据从10.21.21.7到10.23.23.4的ping数据超时（对于2-3个ping请求），但同时从10.23.23.1（主机）到10.23.23.4的ping表明没有超时。

configuration： /etc/network/interfaces (backup01)

 auto lo iface lo inet loopback iface eth0 inet manual iface eth1 inet manual auto vmbr0 iface vmbr0 inet static address xx.xx.xx.95 netmask 255.255.255.0 gateway xx.xx.xx.1 bridge_ports eth0 bridge_stp off bridge_fd 0 auto vmbr2 iface vmbr2 inet static address 10.21.23.1 netmask 255.255.255.0 bridge_ports none bridge_stp off bridge_fd 0 post-up echo 1 > /proc/sys/net/ipv4/ip_forward post-up iptables-restore -n < /root/rules.txt

我用来创buildVLAN到VLAN连接的脚本

 #!/bin/sh #/etc/init.d/tun_serv # ### BEGIN INIT INFO # Provides: tun_serv # Required-Start: $local_fs $network # Required-Stop: $local_fs # Default-Start: 2 3 4 5 # Default-Stop: 0 1 6 # Short-Description: Tun # Description: Tunnel ### END INIT INFO tun_name='tun_serv'; localip='xx.xx.xx.95'; remouteip='yy.yy.yy.213'; tunip='172.16.0.2'; ptpip='172.16.0.1'; route_to_net=10.21.21.0/24; touch /var/lock/$tun_name; case "$1" in start) echo "Create $tun_name Network" ip tunnel add $tun_name mode ipip local $localip remote $remouteip dev vmbr0 ifconfig $tun_name $tunip/30 pointopoint $ptpip ifconfig $tun_name up echo "add routes to $route_to_net !" ip route add $route_to_net via $ptpip dev $tun_name metric 0 echo "Add iptables rulles for multicast on ${tun_name}" iptables -A INPUT -s $ptpip/30 -j ACCEPT iptables -A INPUT -d $ptpip/30 -j ACCEPT iptables -A INPUT -m pkttype --pkt-type multicast -j ACCEPT iptables -A INPUT -m pkttype --pkt-type broadcast -j ACCEPT ;; stop) echo "Stopping Network $tun_name" ifconfig $tun_name down echo "Remove routes" ip route del $route_to_net via $ptpip dev $tun_name metric 0 ;; remove) echo "Stopping Network $tun_name" ifconfig $tun_name down echo "Remove Network $tun_name" ip tunnel del $tun_name echo "Remove routes" ip route del $route_to_net via $ptpip dev $tun_name metric 0 echo "Remove rules from iptables $tun_name" iptables -D INPUT -s $ptpip/30 -j ACCEPT iptables -D INPUT -d $ptpip/30 -j ACCEPT iptables -D INPUT -m pkttype --pkt-type multicast -j ACCEPT iptables -D INPUT -m pkttype --pkt-type broadcast -j ACCEPT ;; *) echo "Usage: /etc/init.d/$tun_name {start|stop|remove}" exit 1 ;; esac exit 0