vpn拨不上去

carlos1

我用VPS建了一个VPN服务端，我用PC直接拨号能拨上，但是用路由器的VPN，就是拨不上去。pptp l2tp 都不行，

016-12-14 22:16:07	l2tp	Plugin pppol2tp.so loaded.
2016-12-14 22:16:07	l2tp	Couldnt allocate PPP unit 0 as it is already in use
2016-12-14 22:16:07	l2tp	Using interface l2tp
2016-12-14 22:16:07	l2tp	Connect: l2tp <-->
2016-12-14 22:16:07	l2tp	LCP terminated by peer (x^O(%^@<m-mt^@^@^bm-3)</m-mt^@^@^bm-3)
2016-12-14 22:16:07	l2tp	Terminating on signal 15
2016-12-14 22:16:07	l2tp	Connection terminated.
2016-12-14 22:16:07	l2tp	Modem hangup
2016-12-14 22:15:06	l2tp	Plugin pppol2tp.so loaded.
2016-12-14 22:15:06	l2tp	Couldnt allocate PPP unit 0 as it is already in use
2016-12-14 22:15:06	l2tp	Using interface l2tp
2016-12-14 22:15:06	l2tp	Connect: l2tp <-->
2016-12-14 22:15:06	l2tp	LCP terminated by peer ({^YqM-r^@<m-mt^@^@^bm-3)</m-mt^@^@^bm-3)
2016-12-14 22:15:06	l2tp	Terminating on signal 15
2016-12-14 22:15:06	l2tp	Connection terminated.
2016-12-14 22:15:06	l2tp	Modem hangup