路由器為小米路由mini刷了老毛子固件，
原先使用中華電信線路，後面改了BB寬頻，路由器基本設置沒變，
可以ping到也能取得DDNS連線，但是現在內建的PPTP也不能連線，
慶聯提供的貓已經改為橋接模式並確認取得實體IP，後方連結了一台小米，一台華碩AC87U已刷梅林固件，
兩台路由ping都能ping到，DDNS也都各別能取到IP，
但是兩台都不能PPTP，梅林內建的SSR-server卻能連線，實在搞不明白，是服務衝突嗎?
主要是因為會出差大陸，購買的VPN服務快到期，
人又在台灣遠程辦公，想趁現在有時間把V2Ray也設置上，
不太明白的是PPTP有顯示，但遠程電腦無法連線成功。
是否是甚麼端口沒啟用?
小米log日志如下
Apr 26 22:51:15 kernel: DROP IN=eth2.2 OUT= MAC=f0:b4:29:79:a5:9f:00:17:10:a0:38:66:08:00 SRC=45.143.220.28 DST=219.X.X.X LEN=446 TOS=0x00 PREC=0x00 TTL=46 ID=8403 DF PROTO=UDP SPT=4703 DPT=5061 LEN=426
Apr 26 22:51:28 kernel: DROP IN=eth2.2 OUT= MAC=f0:b4:29:79:a5:9f:00:17:10:a0:38:66:08:00 SRC=114.25.84.239 DST=219.X.X.X LEN=132 TOS=0x00 PREC=0x00 TTL=111 ID=30703 PROTO=UDP SPT=9642 DPT=8574 LEN=112
Apr 26 22:51:36 kernel: ACCEPT IN=eth2.2 OUT= MAC=f0:b4:29:79:a5:9f:00:17:10:a0:38:66:08:00 SRC=218.X.X.X DST=219.X.X.X LEN=52 TOS=0x00 PREC=0x00 TTL=109 ID=24915 DF PROTO=TCP SPT=9308 DPT=1723 WINDOW=64240 RES=0x00 SYN URGP=0 OPT (020405A00103030801010402)
Apr 26 22:51:36 pptpd[26435]: CTRL: Client 218.X.X.X control connection started
Apr 26 22:51:36 pptpd[26435]: CTRL: Starting call (launching pppd, opening GRE)
Apr 26 22:51:36 pppd[26436]: Plugin pptp.so loaded.
Apr 26 22:51:36 pppd[26436]: PPTP plugin version 0.8.5 compiled for pppd-2.4.7
Apr 26 22:51:36 pppd[26436]: pppd 2.4.7 started by admin, uid 0
Apr 26 22:51:36 pppd[26436]: Using interface ppp10
Apr 26 22:51:36 pppd[26436]: Connect: ppp10 <--> pptp (218.X.X.X)
Apr 26 22:51:42 kernel: DROP IN=eth2.2 OUT= MAC=f0:b4:29:79:a5:9f:00:17:10:a0:38:66:08:00 SRC=194.26.29.137 DST=219.X.X.X LEN=40 TOS=0x00 PREC=0x00 TTL=232 ID=57190 PROTO=TCP SPT=40480 DPT=17883 WINDOW=1024 RES=0x00 SYN URGP=0
Apr 26 22:51:51 kernel: DROP IN=eth2.2 OUT= MAC=f0:b4:29:79:a5:9f:00:17:10:a0:38:66:08:00 SRC=47.75.129.194 DST=219.X.X.X LEN=40 TOS=0x00 PREC=0x00 TTL=242 ID=22088 PROTO=TCP SPT=41593 DPT=28072 WINDOW=1024 RES=0x00 SYN URGP=0
Apr 26 22:52:06 pppd[26436]: LCP: timeout sending Config-Requests
Apr 26 22:52:06 pppd[26436]: Connection terminated.
Apr 26 22:52:06 pppd[26436]: Modem hangup
Apr 26 22:52:06 pppd[26436]: Exit.
Apr 26 22:52:06 pptpd[26435]: CTRL: Reaping child PPP[26436]
Apr 26 22:52:06 pptpd[26435]: CTRL: Client pppd TERM sending
Apr 26 22:52:06 pptpd[26435]: CTRL: Client pppd finish wait
Apr 26 22:52:07 pptpd[26435]: CTRL: Client 218.X.X.X control connection finished
