[pptp-server] pppd.2.4.1 fails where pppd.2.3.11 worked. Why? (fwd)

[robert]

pppd 2.4.0+ is for the linux 2.4 kernels.  pppd 2.3.x is for the 2.2 kernels. 
 The patches are different, as are the steps to get it working.

On Sunday 22 July 2001 16:00, G. Georgiev wrote:
>         HEllo,
>
>         I used pppd.2.3.11 MPPE patched for a pptp link over my cable
> line and it worked well for about an year. Now I have to move to
> pppd.2.4.1 and I receive LCP ProtRej messages for every packet I send
> trough the line. Apparenly I send garbage to the other end, but why?
>
>         The link establishes well, but nothing may pass over. If I
> start the old pppd.2.3.11, there is no problem.
>
>         Config:
> noauth
> asyncmap 0
> noipdefault
> user GALILEO.COM\\A0025798
> debug
> allow-ip 172.20.0.0/16
> lock
> nodetach
> +mppe-40
> +mppe-128
> +mppe-stateless
>
>
> Using interface ppp0
> Connect: ppp0 <--> /dev/ttya0
> sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x63bdbac3> <pcomp>
> <accomp>]
> sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x63bdbac3> <pcomp>
> <accomp>]
> rcvd [LCP ConfReq id=0x99 <mru 1500> <asyncmap 0xa0000> <auth chap 81>
> <magic 0x1eda11de> <pcomp> <accomp>]
> sent [LCP ConfAck id=0x99 <mru 1500> <asyncmap 0xa0000> <auth chap 81>
> <magic 0x1eda11de> <pcomp> <accomp>]
> rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> <magic 0x63bdbac3> <pcomp>
> <accomp>]
> rcvd [CHAP Challenge id=0xad <5b4a3eade4174136f794ca4243ce4aec>, name =
> "172.20.0.15"]
> sent [CHAP Response id=0xad
> <8b3da6c664cdb95de7611de9a29089ac00000000000000004a3e75bb8085a0f5060a76d3c4
>e020bf56d69bfff3639a47 00>, name = "GALILEO.COM\\A0025798"]
> rcvd [LCP ConfReq id=0xea <mru 1500> <asyncmap 0xa0000> <auth chap m$oft>
> <magic 0x348e4be6> <pcomp> <accomp>]
> sent [LCP ConfReq id=0x2 <asyncmap 0x0> <magic 0xf7d4f4f0> <pcomp>
> <accomp>]
> sent [LCP ConfAck id=0xea <mru 1500> <asyncmap 0xa0000> <auth chap m$oft>
> <magic 0x348e4be6> <pcomp> <accomp>]
> rcvd [LCP ConfAck id=0x2 <asyncmap 0x0> <magic 0xf7d4f4f0> <pcomp>
> <accomp>]
> rcvd [CHAP Challenge id=0xad <92152a39b5abaa5b>, name = "172.20.0.15"]
> sent [CHAP Response id=0xad
> <000000000000000000000000000000000000000000000000dced1d122aabf4994832d6c6bb
>2dc1a7019959d126782748 01>, name = "GALILEO.COM\\A0025798"]
> rcvd [CHAP Success id=0xad "CHAP authentication success, unit 248542020"]
> Remote message: CHAP authentication success, unit 248542020
> sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <compress VJ 0f 01>]
> sent [CCP ConfReq id=0x1 <deflate 15> <deflate(old#) 15> <mppe 1 0 0 60>
> <bsd v1 15>]
> rcvd [IPCP ConfReq id=0xba <addr 172.20.0.15> <compress VJ 07 00>]
> sent [IPCP ConfAck id=0xba <addr 172.20.0.15> <compress VJ 07 00>]
> rcvd [IPCP ConfNak id=0x1 <addr 172.20.75.215> <compress VJ 07 00>]
> sent [IPCP ConfReq id=0x2 <addr 172.20.75.215> <compress VJ 07 00>]
> rcvd [CCP ConfRej id=0x1 <deflate 15> <deflate(old#) 15> <bsd v1 15>]
> sent [CCP ConfReq id=0x2 <mppe 1 0 0 60>]
> rcvd [IPCP ConfAck id=0x2 <addr 172.20.75.215> <compress VJ 07 00>]
> local  IP address 172.20.75.215
> remote IP address 172.20.0.15
> Script /etc/ppp/ip-up started (pid 8703)
> rcvd [CCP ConfNak id=0x2 <mppe 1 0 0 20>]
> sent [CCP ConfReq id=0x3 <mppe 1 0 0 20>]
> Script /etc/ppp/ip-up finished (pid 8703), status = 0x0
> rcvd [CCP ConfReq id=0xb9 <mppe 1 0 0 20>]
> sent [CCP ConfAck id=0xb9 <mppe 1 0 0 20>]
> rcvd [CCP ConfAck id=0x3 <mppe 1 0 0 20>]
> MPPE 40 bit, stateless compression enabled
> rcvd [LCP ProtRej id=0xeb 02 61 aa a2 fd b5 f4 70 83 dc 57 ea d9 91 4a c5
> 34 e2 30 99 6c db e7 7f 9b 96 e9 9a 70 87 cf 2b ...
> ]
> Protocol-Reject for unsupported protocol 0x261
> rcvd [LCP ProtRej id=0xec d6 3d 56 c9 bc b3 dd ab 62 69 9b fa 8d 52 44 f9
> cb 58 00 96 b6 8c 7c 10 6b ef 33 b7 6f ad a0 63 ...
> ]
> Protocol-Reject for unsupported protocol 0xd63d
> rcvd [LCP ProtRej id=0xed 1e 51 4f 2b 99 80 aa f2 df e6 99 e0 b1 42 90 cd
> 0e 11 d6 ef 2c 0c 58 c9 2c 10 88 06 7c 68 bf d8 ...
> ]
> Protocol-Reject for unsupported protocol 0x1e51
> rcvd [CCP ResetReq id=0xd4]
> sent [CCP ResetAck id=0xd4]
>
>
>
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