Date: Mon, 14 Oct 2002 01:59:58 -0700 From: "Leonard Chung" <leonardc@cs.berkeley.edu> To: <freebsd-net@freebsd.org> Subject: MPD PPTP tunneling intermittantly fails Message-ID: <AEEMJFAIHDPJNCAKCHHBIEHDCHAA.leonardc@cs.berkeley.edu> In-Reply-To: <20021012182849.X24791-100000@chung.yikes.com>
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I'm trying to get MPD working reliably, but I've been having strange
problems with it. I've gone through the mailing list archives, Google, and
even copied Julian's MPD config files that he posted on the mailing list a
while back with no success.
The problem that I'm having is that MPD starts properly and I can
successfully connect to the service using Windows clients. However, when I
ping internal hosts, the first five or so work fine, and then beyond that
packets start getting lost, with a loss rate of around 50%. These tests are
run over a local network with two subnets, so packet loss shouldn't be a
problem. So although I can currently connect and create a tunnel, it isn't
very useful as beyond any initial DNS queries, file transfers, etc. fail
completely.
Also, is there any way to get DHCP to work with MPD rather than hard wire
IPs directly into MPD's config files?
I'm guessing this is probably just something easy that I'm missing. My
config files and an MPD trace are below.
Thanks,
Leonard
multipptp:
load client1
load client2
load client3
load client4
client1:
new -i ng0 pptp1 pptp1
set ipcp ranges 10.0.0.1/32 10.0.2.1/24
load client_standard
client2:
new -i ng1 pptp2 pptp2
set ipcp ranges 10.0.0.1/32 10.0.2.2/24
load client_standard
client3:
new -i ng2 pptp3 pptp3
set ipcp ranges 10.0.0.1/32 10.0.2.3/24
load client_standard
client4:
new -i ng3 pptp4 pptp4
set ipcp ranges 10.0.0.1/32 10.0.2.4/24
load client_standard
client_standard:
set iface disable on-demand
set iface enable proxy-arp
set iface idle 0
#set iface idle 1800
set bundle enable multilink
set link yes acfcomp protocomp
set link no pap chap
set link enable chap
set link mtu 1460
set link keep-alive 10 60
set ipcp yes vjcomp
set ipcp dns 10.0.0.1
set ipcp nbns 10.0.0.1
#set ipcp dns 192.168.1.3
#set ipcp nbns 192.168.1.4
set bundle enable compression
set bundle yes crypt-reqd
set ccp yes mppc
#set ccp yes mpp-e40
set ccp no mpp-e40
set ccp yes mpp-e128
set ccp yes mpp-stateless
set pptp enable always-ack
#
# For our PPTP server
#
pptp1:
set link type pptp
#set pptp self 65.184.72.125
set pptp self 192.168.0.1
#set pptp self 1.2.3.4
set pptp enable incoming
set pptp disable originate
pptp2:
set link type pptp
#set pptp self 65.184.72.125
set pptp self 192.168.0.1
#set pptp self 1.2.3.4
set pptp enable incoming
set pptp disable originate
pptp3:
set link type pptp
#set pptp self 65.184.72.125
set pptp self 192.168.0.1
#set pptp self 1.2.3.4
set pptp enable incoming
set pptp disable originate
pptp4:
set link type pptp
#set pptp self 65.184.72.125
set pptp self 192.168.0.1
#set pptp self 1.2.3.4
set pptp enable incoming
set pptp disable originate
test1 "<PW>" 10.0.2.1
feather "<PW>" 10.0.2.2
sylvia "<PW>" 10.0.2.3
chung# ifconfig
fxp0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
inet 10.0.0.1 netmask 0xff000000 broadcast 10.255.255.255
inet6 fe80::2a0:c9ff:fe03:b454%fxp0 prefixlen 64 scopeid 0x1
inet 192.168.0.1 netmask 0xffffff00 broadcast 192.168.0.255
ether 00:a0:c9:03:b4:54
media: Ethernet autoselect (100baseTX <full-duplex>)
status: active
lp0: flags=8810<POINTOPOINT,SIMPLEX,MULTICAST> mtu 1500
ed0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 65.184.72.125 netmask 0xfffffffc broadcast 65.184.72.127
inet6 fe80::280:adff:fe73:ebfe%ed0 prefixlen 64 scopeid 0x3
ether 00:80:ad:73:eb:fe
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x4
inet 127.0.0.1 netmask 0xff000000
ppp0: flags=8010<POINTOPOINT,MULTICAST> mtu 1500
sl0: flags=c010<POINTOPOINT,LINK2,MULTICAST> mtu 552
faith0: flags=8002<BROADCAST,MULTICAST> mtu 1500
chung# mpd
Multi-link PPP for FreeBSD, by Archie L. Cobbs.
Based on iij-ppp, by Toshiharu OHNO.
mpd: pid 24745, version 3.9 (root@chung.yikes.com 20:13 11-Oct-2002)
[pptp1] ppp node is "mpd24745-pptp1"
mpd: local IP address for PPTP is 192.168.0.1
[pptp1] using interface ng0
[pptp2] ppp node is "mpd24745-pptp2"
[pptp2] using interface ng1
[pptp3] ppp node is "mpd24745-pptp3"
[pptp3] using interface ng2
[pptp4] ppp node is "mpd24745-pptp4"
[pptp4] using interface ng3
[pptp4:pptp4] mpd: PPTP connection from 192.168.0.2:3068
pptp0: attached to connection with 192.168.0.2:3068
[pptp1] IFACE: Open event
[pptp1] IPCP: Open event
[pptp1] IPCP: state change Initial --> Starting
[pptp1] IPCP: LayerStart
[pptp1] IPCP: Open event
[pptp1] bundle: OPEN event in state CLOSED
[pptp1] opening link "pptp1"...
[pptp1] link: OPEN event
[pptp1] LCP: Open event
[pptp1] LCP: state change Initial --> Starting
[pptp1] LCP: LayerStart
[pptp1] device: OPEN event in state DOWN
[pptp1] attaching to peer's outgoing call
[pptp1] device is now in state OPENING
[pptp1] device: UP event in state OPENING
[pptp1] device is now in state UP
[pptp1] link: UP event
[pptp1] link: origination is remote
[pptp1] LCP: Up event
[pptp1] LCP: state change Starting --> Req-Sent
[pptp1] LCP: phase shift DEAD --> ESTABLISH
[pptp1] LCP: SendConfigReq #1
ACFCOMP
PROTOCOMP
MRU 1500
MAGICNUM 2f3117ec
AUTHPROTO CHAP MSOFTv2
MP MRRU 1600
MP SHORTSEQ
ENDPOINTDISC [802.1] 00 a0 c9 03 b4 54
pptp0-0: ignoring SetLinkInfo
[pptp1] LCP: rec'd Configure Request #0 link 0 (Req-Sent)
MRU 1400
MAGICNUM 5aaa4632
PROTOCOMP
ACFCOMP
CALLBACK
Not supported
[pptp1] LCP: SendConfigRej #0
CALLBACK
[pptp1] rec'd unknown ctrl message, cookie=942710669 cmd=4
[pptp1] LCP: rec'd Configure Request #1 link 0 (Req-Sent)
MRU 1400
MAGICNUM 5aaa4632
PROTOCOMP
ACFCOMP
[pptp1] LCP: SendConfigAck #1
MRU 1400
MAGICNUM 5aaa4632
PROTOCOMP
ACFCOMP
[pptp1] LCP: state change Req-Sent --> Ack-Sent
[pptp1] LCP: SendConfigReq #2
ACFCOMP
PROTOCOMP
MRU 1500
MAGICNUM 2f3117ec
AUTHPROTO CHAP MSOFTv2
MP MRRU 1600
MP SHORTSEQ
ENDPOINTDISC [802.1] 00 a0 c9 03 b4 54
[pptp1] LCP: rec'd Configure Reject #2 link 0 (Ack-Sent)
MP MRRU 1600
MP SHORTSEQ
ENDPOINTDISC [802.1] 00 a0 c9 03 b4 54
[pptp1] LCP: SendConfigReq #3
ACFCOMP
PROTOCOMP
MRU 1500
MAGICNUM 2f3117ec
AUTHPROTO CHAP MSOFTv2
[pptp1] LCP: rec'd Configure Ack #3 link 0 (Ack-Sent)
ACFCOMP
PROTOCOMP
MRU 1500
MAGICNUM 2f3117ec
AUTHPROTO CHAP MSOFTv2
[pptp1] LCP: state change Ack-Sent --> Opened
[pptp1] LCP: phase shift ESTABLISH --> AUTHENTICATE
[pptp1] LCP: auth: peer wants nothing, I want CHAP
[pptp1] CHAP: sending CHALLENGE
[pptp1] LCP: LayerUp
[pptp1] LCP: rec'd Ident #2 link 0 (Opened)
MESG: MSRASV5.10
pptp0-0: ignoring SetLinkInfo
[pptp1] LCP: rec'd Ident #3 link 0 (Opened)
MESG: MSRAS-1-FEATHER
[pptp1] CHAP: rec'd RESPONSE #1
Name: "feather"
Peer name: "feather"
Response is valid
[pptp1] CHAP: sending SUCCESS
[pptp1] LCP: authorization successful
[pptp1] LCP: phase shift AUTHENTICATE --> NETWORK
mpd: ioctl(SIOCSIFMTU): Invalid argument
[pptp1] up: 1 link, total bandwidth 64000 bps
[pptp1] IPCP: Up event
[pptp1] IPCP: state change Starting --> Req-Sent
[pptp1] IPCP: SendConfigReq #1
IPADDR 10.0.0.1
COMPPROTO VJCOMP, 16 comp. channels, no comp-cid
[pptp1] CCP: Open event
[pptp1] CCP: state change Initial --> Starting
[pptp1] CCP: LayerStart
[pptp1] CCP: Up event
[pptp1] CCP: state change Starting --> Req-Sent
[pptp1] CCP: SendConfigReq #1
MPPC
0x01000040: MPPE, 128 bit, stateless
[pptp1] CCP: rec'd Configure Request #4 link 0 (Req-Sent)
MPPC
0x010000e1: MPPC MPPE, 40 bit, 56 bit, 128 bit, stateless
[pptp1] CCP: SendConfigNak #4
MPPC
0x01000040: MPPE, 128 bit, stateless
[pptp1] IPCP: rec'd Configure Request #5 link 0 (Req-Sent)
IPADDR 0.0.0.0
NAKing with 10.0.2.2
PRIDNS 0.0.0.0
NAKing with 10.0.0.1
PRINBNS 0.0.0.0
NAKing with 10.0.0.1
SECDNS 0.0.0.0
SECNBNS 0.0.0.0
[pptp1] IPCP: SendConfigRej #5
SECDNS 0.0.0.0
SECNBNS 0.0.0.0
[pptp1] IPCP: rec'd Configure Reject #1 link 0 (Req-Sent)
COMPPROTO VJCOMP, 16 comp. channels, no comp-cid
[pptp1] IPCP: SendConfigReq #2
IPADDR 10.0.0.1
[pptp1] CCP: rec'd Configure Ack #1 link 0 (Req-Sent)
MPPC
0x01000040: MPPE, 128 bit, stateless
[pptp1] CCP: state change Req-Sent --> Ack-Rcvd
[pptp1] CCP: rec'd Configure Request #6 link 0 (Ack-Rcvd)
MPPC
0x01000040: MPPE, 128 bit, stateless
[pptp1] CCP: SendConfigAck #6
MPPC
0x01000040: MPPE, 128 bit, stateless
[pptp1] CCP: state change Ack-Rcvd --> Opened
[pptp1] CCP: LayerUp
Compress using: MPPE, 128 bit, stateless
Decompress using: MPPE, 128 bit, stateless
mpd: ioctl(SIOCSIFMTU): Invalid argument
[pptp1] IPCP: rec'd Configure Request #7 link 0 (Req-Sent)
IPADDR 0.0.0.0
NAKing with 10.0.2.2
PRIDNS 0.0.0.0
NAKing with 10.0.0.1
PRINBNS 0.0.0.0
NAKing with 10.0.0.1
[pptp1] IPCP: SendConfigNak #7
IPADDR 10.0.2.2
PRIDNS 10.0.0.1
PRINBNS 10.0.0.1
[pptp1] IPCP: rec'd Configure Ack #2 link 0 (Req-Sent)
IPADDR 10.0.0.1
[pptp1] IPCP: state change Req-Sent --> Ack-Rcvd
[pptp1] IPCP: rec'd Configure Request #8 link 0 (Ack-Rcvd)
IPADDR 10.0.2.2
10.0.2.2 is OK
PRIDNS 10.0.0.1
PRINBNS 10.0.0.1
[pptp1] IPCP: SendConfigAck #8
IPADDR 10.0.2.2
PRIDNS 10.0.0.1
PRINBNS 10.0.0.1
[pptp1] IPCP: state change Ack-Rcvd --> Opened
[pptp1] IPCP: LayerUp
10.0.0.1 -> 10.0.2.2
[pptp1] IFACE: Up event
[pptp1] exec: /sbin/ifconfig ng0 10.0.0.1 10.0.2.2 netmask 0xffffffff
-link0
[pptp1] exec: /usr/sbin/arp -s 10.0.2.2 0:a0:c9:3:b4:54 pub
[pptp1] IFACE: Up event
^Cmpd: caught fatal signal int
mpd: fatal error, exiting
[pptp1] IPCP: Down event
[pptp1] IPCP: state change Opened --> Starting
[pptp1] IPCP: LayerDown
[pptp1] IFACE: Down event
[pptp1] exec: /usr/sbin/arp -d 10.0.2.2
[pptp1] exec: /sbin/ifconfig ng0 down delete -link0
[pptp1] IFACE: Close event
[pptp1] IPCP: Close event
[pptp1] IPCP: state change Starting --> Initial
[pptp1] IPCP: LayerFinish
[pptp2] IPCP: Down event
[pptp2] IFACE: Close event
[pptp3] IPCP: Down event
[pptp3] IFACE: Close event
[pptp4] IPCP: Down event
[pptp4] IFACE: Close event
mpd: process 24745 terminated
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