[操作疑難] ASUS router open vpn server 問題

本人用AC58U 起香港set server (OPENVPN)
再買多隻AC58U 起國內set client

當試起國內連個陣既server log

Mar 20 22:59:31 openvpn[16421]: TCP connection established with [AF_INET]140.207.223.150:18771
Mar 20 22:59:32 openvpn[16421]: 140.207.223.150:18771 TLS: Initial packet from [AF_INET]140.207.223.150:18771, sid=2aa07bfc 136b6c80
Mar 20 22:59:32 openvpn[16421]: TCP connection established with [AF_INET]112.64.217.8:6129
Mar 20 22:59:32 openvpn[16421]: 112.64.217.8:6129 WARNING: Bad encapsulated packet length from peer (18245), which must be > 0 and <= 1544 -- please ensure that --tun-mtu or --link-mtu is equal on both peers -- this condition could also indicate a possible active attack on the TCP link -- [Attempting restart...]
Mar 20 22:59:32 openvpn[16421]: 112.64.217.8:6129 Connection reset, restarting [0]
Mar 20 22:59:32 openvpn[16421]: 112.64.217.8:6129 SIGUSR1[soft,connection-reset] received, client-instance restarting
Mar 20 22:59:48 openvpn[16421]: 140.207.223.150:18771 read TCPv4_SERVER: Connection timed out (code=110)
Mar 20 22:59:48 openvpn[16421]: 140.207.223.150:18771 write TCPv4_SERVER: Broken pipe (code=32)
Mar 20 22:59:48 openvpn[16421]: 140.207.223.150:18771 Connection reset, restarting [0]
Mar 20 22:59:48 openvpn[16421]: 140.207.223.150:18771 SIGUSR1[soft,connection-reset] received, client-instance restarting
Mar 20 23:01:11 openvpn[16421]: TCP connection established with [AF_INET]140.207.223.150:12925
Mar 20 23:01:12 openvpn[16421]: 140.207.223.150:12925 TLS: Initial packet from [AF_INET]140.207.223.150:12925, sid=f38e3c57 888017bb
Mar 20 23:01:12 openvpn[16421]: 140.207.223.150:12925 write TCPv4_SERVER: Connection reset by peer (code=104)
Mar 20 23:01:12 openvpn[16421]: 140.207.223.150:12925 Connection reset, restarting [0]
Mar 20 23:01:12 openvpn[16421]: 140.207.223.150:12925 SIGUSR1[soft,connection-reset] received, client-instance restarting
Mar 20 23:01:17 openvpn[16421]: TCP connection established with [AF_INET]140.207.223.150:48837

有冇師兄知道係咩事~求指導