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Date:      Sat, 28 Jul 2001 17:48:09 +0200 (CEST)
From:      Sameh Ghane <sw@anthologeek.net>
To:        FreeBSD-gnats-submit@freebsd.org
Subject:   bin/29277: PPPoE weirdness with some DSL providers
Message-ID:  <200107281548.f6SFm9t10927@core.pourIX.net>

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>Number:         29277
>Category:       bin
>Synopsis:       PPPoE weirdness with some DSL providers
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Jul 28 08:50:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Sameh Ghane
>Release:        FreeBSD 5.0-CURRENT i386
>Organization:
dummy
>Environment:
System: FreeBSD core.pourIX.net 5.0-CURRENT FreeBSD 5.0-CURRENT #2: Fri Jul 20 15:36:38 CEST 2001 root@core.pourIX.net:/var/obj/var/src/sys/CORE i386

This problem appears with 4.3-STABLE too. -CURRENT was working fine until sources of 20th July at last.

ECI Ethernet ADSL modem + 3Com 3c905C.

>Description:
	PPPoE ADSL connection with PPP loops, and finally gives up:

Jul 22 18:27:15 core ppp[7855]: tun0: LCP: FSM: Using "deflink" as a transport 
Jul 22 18:27:15 core ppp[7855]: tun0: LCP: deflink: State change Initial --> Closed 
Jul 22 18:27:15 core ppp[7855]: tun0: LCP: deflink: State change Closed --> Stopped 
Jul 22 18:27:15 core ppp[7855]: tun0: LCP: deflink: RecvConfigReq(160) state = Stopped 
Jul 22 18:27:15 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:15 core ppp[7855]: tun0: LCP:  AUTHPROTO[5] 0xc223 (CHAP 0x05) 
Jul 22 18:27:15 core ppp[7855]: tun0: LCP:  MAGICNUM[6] 0x0a29f23b 
Jul 22 18:27:15 core ppp[7855]: tun0: LCP: deflink: SendConfigReq(1) state = Stopped 
Jul 22 18:27:15 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:15 core ppp[7855]: tun0: LCP:  MAGICNUM[6] 0x42d536c0 
Jul 22 18:27:15 core ppp[7855]: tun0: LCP:  QUALPROTO[8] proto c025, interval 30000ms 
Jul 22 18:27:15 core ppp[7855]: tun0: LCP: deflink: SendConfigAck(160) state = Stopped 
Jul 22 18:27:15 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:15 core ppp[7855]: tun0: LCP:  AUTHPROTO[5] 0xc223 (CHAP 0x05) 
Jul 22 18:27:15 core ppp[7855]: tun0: LCP:  MAGICNUM[6] 0x0a29f23b 
Jul 22 18:27:15 core ppp[7855]: tun0: LCP: deflink: LayerStart 
Jul 22 18:27:15 core ppp[7855]: tun0: LCP: deflink: State change Stopped --> Ack-Sent 
Jul 22 18:27:15 core ppp[7855]: tun0: LCP: deflink: RecvConfigRej(1) state = Ack-Sent 
Jul 22 18:27:15 core ppp[7855]: tun0: LCP:  QUALPROTO[8] proto c025, interval 30000ms 
Jul 22 18:27:15 core ppp[7855]: tun0: LCP: deflink: SendConfigReq(2) state = Ack-Sent 
Jul 22 18:27:15 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:15 core ppp[7855]: tun0: LCP:  MAGICNUM[6] 0x42d536c0 
Jul 22 18:27:16 core ppp[7855]: tun0: LCP: deflink: RecvConfigAck(2) state = Ack-Sent 
Jul 22 18:27:16 core ppp[7855]: tun0: LCP: deflink: State change Ack-Sent --> Opened 
Jul 22 18:27:16 core ppp[7855]: tun0: LCP: deflink: LayerUp 
Jul 22 18:27:16 core ppp[7855]: tun0: LCP: deflink: SendEchoRequest(0) state = Opened 
Jul 22 18:27:16 core ppp[7855]: tun0: Phase: bundle: Authenticate 
Jul 22 18:27:16 core ppp[7855]: tun0: Phase: deflink: his = CHAP 0x05, mine = none 
Jul 22 18:27:16 core ppp[7855]: tun0: Phase: Chap Input: CHALLENGE (16 bytes from BSBGN103) 
Jul 22 18:27:16 core ppp[7855]: tun0: Phase: Chap Output: RESPONSE (sameh@net1.nerim.fsa) 
Jul 22 18:27:16 core ppp[7855]: tun0: LCP: deflink: RecvEchoReply(0) state = Opened 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP: deflink: RecvConfigReq(1) state = Opened 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP: deflink: LayerDown 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  AUTHPROTO[5] 0xc223 (CHAP 0x05) 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MAGICNUM[6] 0x0ecf65f1 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP: deflink: SendConfigReq(3) state = Opened 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MAGICNUM[6] 0x9429fe39 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  QUALPROTO[8] proto c025, interval 30000ms 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP: deflink: SendConfigNak(1) state = Opened 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP: deflink: State change Opened --> Req-Sent 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP: deflink: RecvConfigNak(3) state = Req-Sent 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MRU[4] 1500 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP: deflink: SendConfigReq(4) state = Req-Sent 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MAGICNUM[6] 0x9429fe39 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  QUALPROTO[8] proto c025, interval 30000ms 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP: deflink: RecvConfigReq(2) state = Req-Sent 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  AUTHPROTO[5] 0xc223 (CHAP 0x05) 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MAGICNUM[6] 0x0ecf65f1 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP: deflink: SendConfigAck(2) state = Req-Sent 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  AUTHPROTO[5] 0xc223 (CHAP 0x05) 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MAGICNUM[6] 0x0ecf65f1 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP: deflink: State change Req-Sent --> Ack-Sent 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP: deflink: RecvConfigNak(4) state = Ack-Sent 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MRU[4] 1500 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP: deflink: SendConfigReq(5) state = Ack-Sent 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MAGICNUM[6] 0x9429fe39 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  QUALPROTO[8] proto c025, interval 30000ms 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP: deflink: RecvConfigNak(5) state = Ack-Sent 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MRU[4] 1500 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP: deflink: SendConfigReq(6) state = Ack-Sent 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MAGICNUM[6] 0x9429fe39 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  QUALPROTO[8] proto c025, interval 30000ms 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP: deflink: RecvConfigNak(6) state = Ack-Sent 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MRU[4] 1500 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP: deflink: SendConfigReq(7) state = Ack-Sent 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MAGICNUM[6] 0x9429fe39 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  QUALPROTO[8] proto c025, interval 30000ms 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP: deflink: RecvConfigNak(7) state = Ack-Sent 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MRU[4] 1500 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP: deflink: SendConfigReq(8) state = Ack-Sent 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MAGICNUM[6] 0x9429fe39 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  QUALPROTO[8] proto c025, interval 30000ms 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP: deflink: RecvConfigRej(8) state = Ack-Sent 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP: deflink: SendConfigReq(9) state = Ack-Sent 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MAGICNUM[6] 0x9429fe39 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  QUALPROTO[8] proto c025, interval 30000ms 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP: deflink: RecvConfigRej(9) state = Ack-Sent 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP: deflink: SendConfigReq(10) state = Ack-Sent 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MAGICNUM[6] 0x9429fe39 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  QUALPROTO[8] proto c025, interval 30000ms 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP: deflink: RecvConfigRej(10) state = Ack-Sent 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP: deflink: SendConfigReq(11) state = Ack-Sent 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  MAGICNUM[6] 0x9429fe39 
Jul 22 18:27:18 core ppp[7855]: tun0: LCP:  QUALPROTO[8] proto c025, interval 30000ms 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP: deflink: RecvConfigRej(11) state = Ack-Sent 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP: deflink: SendConfigReq(12) state = Ack-Sent 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP:  MAGICNUM[6] 0x9429fe39 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP:  QUALPROTO[8] proto c025, interval 30000ms 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP: deflink: RecvConfigRej(12) state = Ack-Sent 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP: deflink: SendConfigReq(13) state = Ack-Sent 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP:  MAGICNUM[6] 0x9429fe39 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP:  QUALPROTO[8] proto c025, interval 30000ms 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP: deflink: RecvConfigRej(13) state = Ack-Sent 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP: deflink: SendConfigReq(14) state = Ack-Sent 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP:  MAGICNUM[6] 0x9429fe39 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP:  QUALPROTO[8] proto c025, interval 30000ms 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP: deflink: RecvConfigRej(14) state = Ack-Sent 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP: deflink: SendConfigReq(15) state = Ack-Sent 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP:  MAGICNUM[6] 0x9429fe39 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP:  QUALPROTO[8] proto c025, interval 30000ms 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP: deflink: RecvConfigRej(15) state = Ack-Sent 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP: deflink: SendConfigReq(16) state = Ack-Sent 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP:  MAGICNUM[6] 0x9429fe39 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP:  QUALPROTO[8] proto c025, interval 30000ms 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP: deflink: RecvConfigRej(16) state = Ack-Sent 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP: deflink: SendConfigReq(17) state = Ack-Sent 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP:  MAGICNUM[6] 0x9429fe39 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP:  QUALPROTO[8] proto c025, interval 30000ms 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP: deflink: RecvConfigRej(17) state = Ack-Sent 
Jul 22 18:27:19 core ppp[7855]: tun0: LCP:  MRU[4] 1492 
Jul 22 18:27:19 core ppp[7855]: tun0: Phase: deflink: Too many LCP REQs sent - abandoning negotiation 

The problem does not happen with an old release PPP. It also happens only with *some* DSL providers.

It has been seen with Nerim, by two others french -STABLE users, after a PPP upgrade. A PPP downgrade fixes
the problem.

Removing set mru/mtu from ppp.conf doesn't resolve the problem.

>How-To-Repeat:

Try connecting with a fresh -current or -stable to some DSL providers, using PPPoE.
	
>Fix:

	Must have something with the ether.c/lcp.c commits around 18th-20th July.
	Please contact me to test patches if you have some.
>Release-Note:
>Audit-Trail:
>Unformatted:

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