Sstrhsrtj

I use Arch linux, and using pptp to connect VPN. Following the Arch wiki steps, it worked before I updated Arch linux. I updated Arch following Arch homepage commands as:

pacman -Syuw                           # download packages

rm /etc/ssl/certs/ca-certificates.crt  # remove conflicting file

pacman -Su                             # perform upgrade

then I ran pptpclient will get either

Error: either "to" is duplicate, or "uid" is a garbage

or after routed and pinged long time I get the following error:

Modem hangup

Sent 1002073833 bytes, received 0 bytes

MPPE disabled

Connection terminated

Waiting for 1 child processes...

script /etc/ppp/ip-down, pid 2726

Script /etc/ppp/ip-down finished (pid 2726), status = 0x0

I do not know what is wrong, but I feel like pptpclient cannot receive any data after routed.

Does anyone have any ideas how to proceed?

UPDATED:

when I debug pptpclient using command:

sudo pon myVpn debug dump logfd 2 nodetach 

then the debug info as:

pppd options in effect:

debug           # (from command line)

nodetach                # (from command line)

logfd 2         # (from command line)

dump            # (from command line)

noauth          # (from /etc/ppp/options)

name dxcqcv             # (from /etc/ppp/peers/myVpn)

remotename PPTP         # (from /etc/ppp/peers/myVpn)

                # (from /etc/ppp/options)

pty pptp p1.hk3.flydidu.com --nolaunchpppd              # (from /etc/ppp/peers/myVpn)

crtscts         # (from /etc/ppp/options)

                # (from /etc/ppp/options)

asyncmap 0              # (from /etc/ppp/options)

mru 1400                # (from /etc/ppp/options)

mtu 1400                # (from /etc/ppp/options)

silent          # (from /etc/ppp/options)

lcp-echo-failure 4              # (from /etc/ppp/options)

lcp-echo-interval 30            # (from /etc/ppp/options)

hide-password           # (from /etc/ppp/options)

ipparam myVpn           # (from /etc/ppp/peers/myVpn)

proxyarp                # (from /etc/ppp/options)

usepeerdns              # (from /etc/ppp/peers/myVpn)

nobsdcomp               # (from /etc/ppp/options)

nodeflate               # (from /etc/ppp/options)

require-mppe-128                # (from /etc/ppp/peers/myVpn)

noipx           # (from /etc/ppp/options)

using channel 8

Using interface ppp0





Connect: ppp0 <--> /dev/pts/4

***Error: either "to" is duplicate, or "uid" is a garbage.***

rcvd [LCP ConfReq id=0x1 <asyncmap 0x0> <auth chap MS-v2> <magic 0x80de6b20> <pcomp> <accomp>]

sent [LCP ConfReq id=0x1 <mru 1400> <asyncmap 0x0> <magic 0xd2626b7a> <pcomp> <accomp>]

sent [LCP ConfAck id=0x1 <asyncmap 0x0> <auth chap MS-v2> <magic 0x80de6b20> <pcomp> <accomp>]

rcvd [LCP ConfAck id=0x1 <mru 1400> <asyncmap 0x0> <magic 0xd2626b7a> <pcomp> <accomp>]

sent [LCP EchoReq id=0x0 magic=0xd2626b7a]

rcvd [LCP EchoReq id=0x0 magic=0x80de6b20]

sent [LCP EchoRep id=0x0 magic=0xd2626b7a]

rcvd [CHAP Challenge id=0x7d <94f97c87ea84a9097b3910d403d0ab14>, name = "pptpd"]

Warning - secret file /etc/ppp/chap-secrets has world and/or group access

added response cache entry 0

sent [CHAP Response id=0x7d <289521c7e2bf1d1a2d3bd8addb8b494e0000000000000000d8ae891c6114fbe4097ef6b89fef69e516540b92f2198a3e00>, name = "dxcqcv"]

rcvd [LCP EchoRep id=0x0 magic=0x80de6b20]

rcvd [CHAP Success id=0x7d "S=A37F545150DBF921600B0B681B1E1ADDD7238617"]

response found in cache (entry 0)

CHAP authentication succeeded

sent [CCP ConfReq id=0x1 <mppe +H -M +S -L -D -C>]

rcvd [CCP ConfReq id=0x1 <mppe +H -M +S -L -D -C>]

sent [CCP ConfAck id=0x1 <mppe +H -M +S -L -D -C>]

rcvd [CCP ConfAck id=0x1 <mppe +H -M +S -L -D -C>]

MPPE 128-bit stateless compression enabled

sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]



rcvd [IPCP ConfReq id=0x1 <addr 10.10.0.1>]

sent [IPCP ConfAck id=0x1 <addr 10.10.0.1>]

rcvd [IPCP ConfRej id=0x1 <compress VJ 0f 01>]

sent [IPCP ConfReq id=0x2 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]

rcvd [IPCP ConfNak id=0x2 <addr 10.10.0.21> <ms-dns1 8.8.8.8> <ms-dns2 8.8.4.4>]

sent [IPCP ConfReq id=0x3 <addr 10.10.0.21> <ms-dns1 8.8.8.8> <ms-dns2 8.8.4.4>]

rcvd [IPCP ConfAck id=0x3 <addr 10.10.0.21> <ms-dns1 8.8.8.8> <ms-dns2 8.8.4.4>]

Cannot determine ethernet address for proxy ARP

local  IP address 10.10.0.21

remote IP address 10.10.0.1

primary   DNS address 8.8.8.8

secondary DNS address 8.8.4.4

Script /etc/ppp/ip-up started (pid 8055)

Script /etc/ppp/ip-up finished (pid 8055), status = 0x0

when this time the ppp0 was created, then I routed as:

sudo ip route replace default dev ppp0 

It should be worked like before, but it didn't after updated Arch, and show error message as:

Script pptp p1.hk3.flydidu.com --nolaunchpppd finished (pid 8047), status = 0x0

Modem hangup

**Connect time 2.0 minutes.

Sent 851273846 bytes, received 0 bytes.**

Script /etc/ppp/ip-down started (pid 8097)

MPPE disabled

sent [LCP TermReq id=0x2 "MPPE disabled"]

Connection terminated.

Waiting for 1 child processes...

  script /etc/ppp/ip-down, pid 8097

Script /etc/ppp/ip-down finished (pid 8097), status = 0x0

That message Error: either "to" is duplicate, or "uid" is a garbage is a message from the ip command which pptpclient presumably uses to set up the connection. It's its way to say that the command line which it was given is syntactically invalid, and that it can't parse it.

Since you claim it started after an upgrade of your Arch installation, it's likely that this is just a bug in the most recent version of the pptpclient program.

I would file a bug in the program's bug tracker.