I have a ubuntu server 14 with working pptpd. But after it upgraded to 15 with do-release-upgrade, the pptpd is failed. I can start this service, but it won't accept any connection from client.
I dont know where the log of pptpd is. When i check service pptpd status, i got this:
May 10 02:45:56 segnetproxy pptpd[12134]: CTRL: Starting call (launching ppp...)
May 10 02:45:56 segnetproxy pptpd[12119]: /usr/sbin/pppd: Plugin /usr/lib/pp...6
May 10 02:52:44 segnetproxy pptpd[12217]: CTRL: Client a.client.ip.address control...d
May 10 02:52:44 segnetproxy pptpd[12217]: CTRL: Starting call (launching ppp...)
May 10 02:52:44 segnetproxy pptpd[12119]: /usr/sbin/pppd: Plugin /usr/lib/pp...6
May 10 02:52:44 segnetproxy pptpd[12217]: GRE: read(fd=6,buffer=7fee990de4a0...s
May 10 02:52:46 segnetproxy pptpd[12219]: CTRL: Client a.client.ip.address control...d
May 10 02:52:46 segnetproxy pptpd[12219]: CTRL: Starting call (launching ppp...)
May 10 02:52:46 segnetproxy pptpd[12119]: /usr/sbin/pppd: Plugin /usr/lib/pp...6
May 10 02:52:46 segnetproxy pptpd[12219]: GRE: read(fd=6,buffer=7f789f93f4a0...s
All lines related to GRE are red.
When I try to run pptpd in foreground, every connecting trying prints a line:
/usr/sbin/pppd: Plugin /usr/lib/pptpd/pptpd-logwtmp.so is for pppd version 2.4.5, this is 2.4.6
Any idea? Thanks.