I observed a peculiar situation today on an ADSL link using pptpclient
and the userland ppp daemon: the LCP negociation hunk in state
Ack-Rcvd for almost 3 hours (until I killed it) without any progress,
but without timing out, either.
Here is an excerpt from the log:
Apr 3 05:25:02 melusine ppp[53064]: tun0: LCP: deflink: State change Initial -->
Closed
Apr 3 05:25:02 melusine ppp[53064]: tun0: LCP: deflink: State change Closed -->
Stopped
Apr 3 05:25:03 melusine ppp[53064]: tun0: LCP: deflink: LayerStart
Apr 3 05:25:03 melusine ppp[53064]: tun0: Warning: deflink: Reducing configured MRU
from 1500 to 1480
Apr 3 05:25:03 melusine ppp[53064]: tun0: LCP: deflink: SendConfigReq(1) state =
Stopped
Apr 3 05:25:03 melusine ppp[53064]: tun0: LCP: ACFCOMP[2]
Apr 3 05:25:03 melusine ppp[53064]: tun0: LCP: PROTOCOMP[2]
Apr 3 05:25:03 melusine ppp[53064]: tun0: LCP: ACCMAP[6] 0x00000000
Apr 3 05:25:03 melusine ppp[53064]: tun0: LCP: MRU[4] 1480
Apr 3 05:25:03 melusine ppp[53064]: tun0: LCP: MAGICNUM[6] 0x91e371fe
Apr 3 05:25:03 melusine ppp[53064]: tun0: LCP: deflink: State change
Stopped --> Req-Sent
Apr 3 05:25:06 melusine ppp[53064]: tun0: LCP: deflink: SendConfigReq(1) state =
Req-Sent
Apr 3 05:25:06 melusine ppp[53064]: tun0: LCP: ACFCOMP[2]
Apr 3 05:25:06 melusine ppp[53064]: tun0: LCP: PROTOCOMP[2]
Apr 3 05:25:06 melusine ppp[53064]: tun0: LCP: ACCMAP[6] 0x00000000
Apr 3 05:25:06 melusine ppp[53064]: tun0: LCP: MRU[4] 1480
Apr 3 05:25:06 melusine ppp[53064]: tun0: LCP: MAGICNUM[6] 0x91e371fe
Apr 3 05:25:09 melusine ppp[53064]: tun0: LCP: deflink: SendConfigReq(1) state =
Req-Sent
Apr 3 05:25:10 melusine ppp[53064]: tun0: LCP: ACFCOMP[2]
Apr 3 05:25:10 melusine ppp[53064]: tun0: LCP: PROTOCOMP[2]
Apr 3 05:25:10 melusine ppp[53064]: tun0: LCP: ACCMAP[6] 0x00000000
Apr 3 05:25:10 melusine ppp[53064]: tun0: LCP: MRU[4] 1480
Apr 3 05:25:10 melusine ppp[53064]: tun0: LCP: MAGICNUM[6] 0x91e371fe
Apr 3 05:25:10 melusine ppp[53064]: tun0: LCP: deflink: RecvConfigAck(1) state =
Req-Sent
Apr 3 05:25:10 melusine ppp[53064]: tun0: LCP: deflink: State change Req-Sent -->
Ack-Rcvd
Apr 3 08:11:27 melusine ppp[53064]: tun0: Phase: Signal 15, terminate.
In other sessions that I have a trace of, I never enter Ack-Recvd,
but instead:
Apr 3 08:12:07 melusine ppp[61776]: tun0: LCP: deflink: RecvConfigReq(224) state =
Req-Sent
This box is running 4.5-STABLE kernel and world cvsuppsed 10 days or so
ago. Any idea why it did not time out?
Thomas.
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