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matrixer
n00b
Joined: 09 May 2013
Posts: 4
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 Posted: Thu May 09, 2013 10:07 pm Post subject: Problem with routing, causing endless loop |
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Hi
I have used a PPTP connection for a while and routed all traffic in the VPN , it has worked flawless for quite some time. But yesterday a new problem showed up when I rebooted the server.
When I prompt | Code: | | route add default ppp0 |
it seams that a loop is created and after just 2 minutes the connections is broken. These outputs are just 3 seconds in between. | Code: | ppp0: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 996
inet 5.254.149.xxx netmask 255.255.255.255 destination 5.254.149.1
ppp txqueuelen 3 (Point-to-Point Protocol)
RX packets 6 bytes 78 (78.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 181207 bytes 64872610 (61.8 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
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and | Code: | ppp0: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 996
inet 5.254.149.211 netmask 255.255.255.255 destination 5.254.149.1
ppp txqueuelen 3 (Point-to-Point Protocol)
RX packets 6 bytes 78 (78.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 305181 bytes 109420240 (104.3 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
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and then after I have the following in the logfiles | Code: | May 9 22:48:41 NAS pptp[1838]: anon log[logecho:pptp_ctrl.c:677]: Echo Request received.
May 9 22:59:41 NAS pptp[1838]: anon log[pptp_handle_timer:pptp_ctrl.c:1050]: closing control connection due to missing echo reply
May 9 22:59:41 NAS pptp[1838]: anon log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 12 'Call-Clear-Request'
May 9 22:59:41 NAS pptp[1838]: anon log[pptp_conn_close:pptp_ctrl.c:430]: Closing PPTP connection
May 9 22:59:41 NAS pptp[1838]: anon log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 3 'Stop-Control-Connection-Request'
May 9 22:59:41 NAS pptp[1838]: anon log[call_callback:pptp_callmgr.c:79]: Closing connection (call state)
May 9 22:59:41 NAS pppd[1830]: Modem hangup
May 9 22:59:41 NAS pppd[1830]: Connect time 2.0 minutes.
May 9 22:59:41 NAS pppd[1830]: Sent 813898930 bytes, received 0 bytes.
May 9 22:59:41 NAS pppd[1830]: MPPE disabled
May 9 22:59:41 NAS pppd[1830]: Connection terminated.
May 9 22:59:41 NAS pppd[1830]: Exit.
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I have read that it's probably an error in my routings, but I don't really understand the issue (haven't looked at the routing output before this issue came up)
Routing before i redirecting my default to ppp0 | Code: |
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0 eth0
127.0.0.0 127.0.0.1 255.0.0.0 UG 0 0 0 lo
178.73.207.1 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
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and after | Code: | Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
0.0.0.0 0.0.0.0 0.0.0.0 U 0 0 0 ppp0
0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0 eth0
127.0.0.0 127.0.0.1 255.0.0.0 UG 0 0 0 lo
178.73.207.1 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 |
And suggestions on how to correct my routings? |
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matrixer
n00b
Joined: 09 May 2013
Posts: 4
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| Posted: Sat May 18, 2013 1:23 pm Post subject: |
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| sorry for bumping the thread, but I'm still stuck on the same issue. My routing knowledge is poor... |
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papahuhn
l33t
Joined: 06 Sep 2004
Posts: 626
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| Posted: Sat May 18, 2013 3:28 pm Post subject: |
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You need to set a specific route towards your VPN server on eth0.
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Death by snoo-snoo! |
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matrixer
n00b
Joined: 09 May 2013
Posts: 4
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| Posted: Sat May 18, 2013 8:10 pm Post subject: |
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Okay, before I launched my VPN connection and then set the default route to the ppp0 (my VPN connection).
| Code: | | route add default ppp0 |
now gives me a loop, how should I make it more specific? |
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papahuhn
l33t
Joined: 06 Sep 2004
Posts: 626
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| Posted: Sat May 18, 2013 9:16 pm Post subject: |
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| Code: | | route add -host vpn-server-ip gw 192.168.0.1 |
_________________
Death by snoo-snoo! |
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yjm
n00b
Joined: 25 Oct 2012
Posts: 5
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| Posted: Sun May 19, 2013 5:37 pm Post subject: |
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| pptpclient-1.7.2-r3 fixes your issue I believe |
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matrixer
n00b
Joined: 09 May 2013
Posts: 4
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| Posted: Sun May 19, 2013 7:00 pm Post subject: |
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| Thanks, the update to r3 solved the problem. The more specif argument for routing didn't cause the loop but the routing was still via my eth0 connection and not the PPTP. |
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