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Bug 10477 - pppd hangs when pty option is used
pppd hangs when pty option is used
Product: Red Hat Linux
Classification: Retired
Component: ppp (Show other bugs)
i386 Linux
medium Severity medium
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Assigned To: Nalin Dahyabhai
Depends On:
  Show dependency treegraph
Reported: 2000-03-31 06:28 EST by Joerg Dorchain
Modified: 2008-05-01 11:37 EDT (History)
0 users

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2000-04-03 12:16:13 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Joerg Dorchain 2000-03-31 06:28:31 EST
I want to connect two pppd' with ssh.
The command I use for this is pppd pty 'ssh -t -i identity -l vpnuser
vpnhost.mydomain /usr/sbin/pppd'.
Then both pppds timeout on sending config-requests.
Only ssh -t -i identity -l vpnuser vpnhost.mydomain /usr/sbin/pppd gives a
connect and ppp-frames on the screen.
Using rsh instead of ssh gives the same. ppp-2.3.10 and ppp-2.3.11 give the
Any Hints?
Comment 1 Nalin Dahyabhai 2000-04-03 12:16:59 EDT
This seems to work for me:
pppd pty 'rsh somehost /usr/sbin/pppd notty noauth' noauth

I had to supply the 'noauth' flag because both systems already have default
routes, and supply the local and remote addresses because I was running both
the server and the client.
Comment 2 Joerg Dorchain 2000-04-04 10:08:59 EDT
Please understand me right that I said that my pppds don't even exchange
lcp-frames to detect they would need additional options for establishing ipcp.
Both send config-requests that never reach their counterpart.
IMHO this is a bug (if not in the pppd pty option, then in sshd), so it could be
an idea to reopen this bug-report again.
If you have problems reproducing the problem, please ask.

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