network-manager-pptp forgets to add a route when connecting to (split) VPN

[tankdriver]

What I expected to happen:
Connect successfully to company VPN, use company resources normally.

What happened instead:
Connect successfully to company VPN, can not do anything, network is dead.

The company VPN is set up only for some services, so in the VPN-settings,
"Use this connection only for resources on its network" is checked.
It is working on Windows without any problems, so i looked at the routing table
and saw that a route is missing on ubuntu:

original routing table, vpn enabled:
$ route
Kernel-IP-Routentabelle
Ziel Router Genmask Flags Metric Ref Use Iface
default 192.168.1.1 0.0.0.0 UG 0 0 0 eth0
10.20.40.100 * 255.255.255.255 UH 0 0 0 ppp0
link-local * 255.255.0.0 U 1000 0 0 eth0
192.168.1.0 * 255.255.255.0 U 1 0 0 eth0
193.XXX.XXX.XXX 192.168.1.1 255.255.255.255 UGH 0 0 0 eth0
193.XXX.XXX.XXX 192.168.1.1 255.255.255.255 UGH 0 0 0 eth0

"fixed" (in my case) routing table, vpn enabled and fully working:
$ route
Kernel-IP-Routentabelle
Ziel Router Genmask Flags Metric Ref Use Iface
default 192.168.1.1 0.0.0.0 UG 0 0 0 eth0
10.0.0.0 * 255.0.0.0 U 0 0 0 ppp0
10.20.40.100 * 255.255.255.255 UH 0 0 0 ppp0
link-local * 255.255.0.0 U 1000 0 0 eth0
192.168.1.0 * 255.255.255.0 U 1 0 0 eth0
193.XXX.XXX.XXX 192.168.1.1 255.255.255.255 UGH 0 0 0 eth0
193.XXX.XXX.XXX 192.168.1.1 255.255.255.255 UGH 0 0 0 eth0

The workaround is to add a route manually, targeting the company network, using ppp0

Windows adds this route automatically.

Please fix this bug, this was very time-consuming and annoying to find out the root cause of the problem.

$ lsb_release -rd
Description: Ubuntu precise (development branch)
Release: 12.04

$ apt-cache policy network-manager-pptp
network-manager-pptp:
  Installiert: 0.9.2.0-1ubuntu1
  Kandidat: 0.9.2.0-1ubuntu1
  Versionstabelle:
 *** 0.9.2.0-1ubuntu1 0
        500 http://at.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
        100 /var/lib/dpkg/status

This bug appears in Ubuntu 11.10 too.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[bq (balique)]

I can confirm the problem,

I have upgraded from 10.04 to 12.04 and pptp based vpn stopped working.

What I did :
I did copy the '/etc/ppp/chap-secrets' and '/etc/peers/name_of_the_company' from the old setup to the new machine.

In the older release the pppd call was all I needed to do , but now :

Connecting is ok :

$ sudo /usr/sbin/pppd nodetach call name_of_the_company
Connect: ppp0 <--> /dev/pts/4
CHAP authentication succeeded
MPPE 128-bit stateless compression enabled
local IP address 10.10.116.34
remote IP address 10.10.116.0

other terminal :
$ ping 10.10.16.162
-- no response

$ route -n |grep ppp0

10.10.116.0 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0

$ sudo route add -net 10.10.16.0/24 ppp0

$ route -n |grep ppp0
10.10.16.0 0.0.0.0 255.255.255.0 U 0 0 0 ppp0
10.10.116.0 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0

$ ping 10.10.16.162
PING 10.10.16.162 (10.10.16.162) 56(84) bytes of data.
64 bytes from 10.10.16.162: icmp_req=1 ttl=252 time=124 ms

regards, bq

[bq (balique)]

oups, now I see, that my report is not about "network-manager-pptp" but about 'pppd' itself ... but that can mean that the problem is there in pppd , and not in the network manager.

[bq (balique)]

I am sorry, I was wrong, I forgot to copy file /etc/ppp/ip-up.d/route-traffic from the old setup :( sorry, it works as before

[Thomas Hood (jdthood)]

Hi. What's the status of this bug in Ubuntu 12.04?