freeBSD pptp连接到 RouterOS 问题

上尉

遇到了个问题，在windows下可以连接到routeros，但在freeBSD下就无法连接到 RouterOS
下面是freeBSD /var/log/ppp.log，请问问题出在什么地方啊。
Sep  6 13:15:49 test ppp[91641]: Phase: Using interface: tun0
Sep  6 13:15:49 test ppp[91641]: Phase: deflink: Created in closed state
Sep  6 13:15:49 test ppp[91641]: Warning: The alias command is deprecated
Sep  6 13:15:49 test ppp[91641]: Phase: PPP Started (direct mode).
Sep  6 13:15:49 test ppp[91641]: Phase: bundle: Establish
Sep  6 13:15:49 test ppp[91641]: Phase: deflink: closed -> opening
Sep  6 13:15:49 test ppp[91641]: Phase: deflink: Connected!
Sep  6 13:15:49 test ppp[91641]: Phase: deflink: opening -> carrier
Sep  6 13:15:50 test ppp[91641]: Phase: Signal 15, terminate.
Sep  6 13:15:50 test ppp[91641]: Phase: deflink: Disconnected!
Sep  6 13:15:50 test ppp[91641]: Phase: deflink: Connect time: 1 secs: 0 octets in, 0 octets out
Sep  6 13:15:50 test ppp[91641]: Phase: deflink: 0 packets in, 0 packets out
Sep  6 13:15:50 test ppp[91641]: Phase:  total 0 bytes/sec, peak 0 bytes/sec on Wed Sep  6 13:15:49 2006
Sep  6 13:15:50 test ppp[91641]: Phase: deflink: carrier -> closed
Sep  6 13:15:50 test ppp[91641]: Phase: bundle: Dead
Sep  6 13:15:50 test ppp[91641]: Phase: PPP Terminated (normal).