异地两台爱快路由器，vpn一段时间后会自动断开

甜菜

昨晚测试了2台爱快做VPN，用L2TP，设置好静态路由后，都挺正常的，但是发现大概会在4-5个小时后就自动断开，要手动停用再启动就能能正常，日志也看不懂。

2024-08-03 16:18:01	l2tp_cdd	Exit.
2024-08-03 16:18:01	l2tp_cdd	Couldnt rename ppp2 to l2tp_cdd
2024-08-03 16:18:01	l2tp_cdd	pppd 2.4.7 started by root, uid 0
2024-08-03 16:18:01	l2tp_cdd	Plugin pppol2tp.so loaded.
2024-08-03 16:18:00	l2tp_cdd	Terminating on signal 15
2024-08-03 16:18:00	l2tp_cdd	Overriding mru 1500 to mtu value 1400
2024-08-03 16:18:00	l2tp_cdd	Overriding mtu 1500 to 1400
2024-08-03 16:18:00	l2tp_cdd	Connect time 6.0 minutes.
2024-08-03 16:18:00	l2tp_cdd	Terminating on signal 15
2024-08-03 16:12:04	l2tp_cdd	remote IP address 10.0.0.1
2024-08-03 16:12:04	l2tp_cdd	local IP address 10.0.0.10
2024-08-03 16:12:04	l2tp_cdd	CHAP authentication succeeded
2024-08-03 16:12:04	l2tp_cdd	CHAP authentication succeeded: Access granted
2024-08-03 16:12:04	l2tp_cdd	syncppp not active
2024-08-03 16:12:04	l2tp_cdd	Overriding mru 1500 to mtu value 1400
2024-08-03 16:12:04	l2tp_cdd	Overriding mtu 1500 to 1400
2024-08-03 16:12:04	l2tp_cdd	" class="" style="box-sizing: border-box; padding: 10px 6px; transition: all 0.4s ease 0s; border-bottom-color: rgb(221, 221, 221);">Connect: l2tp_cdd <-->
2024-08-03 16:12:04	l2tp_cdd	Using interface l2tp_cdd
2024-08-03 16:12:04	l2tp_cdd	pppd 2.4.7 started by root, uid 0
2024-08-03 16:12:04	l2tp_cdd	Plugin pppol2tp.so loaded.

wzxiang

把MTU数值更改到默认的1400

甜菜

呃，应该是 l2tp 是明文 vpn，被运营商卡掉了。目前换了 openvpn 还行

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