SLIP error: "Unknown Server Error" ??

SLIP error: "Unknown Server Error" ??

Post by Richard Cob » Mon, 15 Jan 1996 04:00:00

I'm attempting to set up SLIP on my Linux 1.2.13 machine so I can dial
into Rice's SLIP servers.  I've compiled SLIP support into the kernel
and installed dip-3.3.7n (from the Slackware distribution).

A brief word about Rice's networking:
Our primary terminal server is called  If all the lines
going into charon are busy, tho, the number automatically rolls over
to the secondary server,  So far as I can tell, charon
only has one IP address.  Judging by the /etc/hosts file on (one of Rice's many SunOS machines), where I'm currently
logged on, lethe has 3 different IP's.  I don't know if this will be
problematic or not.  Whichever server you get, things work pretty much
exactly the same -- you give it a username, password, type "slip", it
gives you an IP address (dynamically assigned), and off you go.

Anyway, back to the problem.

I went through the NET-2-HOWTO and did all the steps that seemed
necessary for a SLIP connection: added the commands which establish
the loopback address to rc.inet1, yanked the lines which run inetd &
other net daemons from rc.inet2 (I don't want anyone to be able to
connect to my machine, and of course I'm not always logged on).  I
grabbed the sample dipscript file from the howto, changed it slightly
to reflect my login prompts, etc., and ran it.  Oh, I suppose I should
point out that I have left /etc/HOSTNAME at "" -- I
can't predict what IP address I'll end up with, so it didn't make
sense to give my machine a new name.  Also, I explicitly set the MTU
at 1500.  I know what it says in the README for dip, but Rice
distributes Trumpet Winsock for Windows SLIP connections; they've
preconfigured it, and that's the value they use for MTU.  So anyway, I
run dip:

# dip /etc/dipscript
darkstar: Unknown server error.

To see if it was a problem with my script, I tried:

# dip -t -v
darkstar: Unknown server error.

First off, what does this error message mean?  My local computer
doesn't know what the name "" refers to?  It's got to
be a problem with my computer, because I get the error message before
I hear any sort of noises from the modem which would indicate dialing.

Anyway, if we can figure out what it means, what can I do about it?

Thanks a lot for your help, and I'm sorry I kinda rambled here,



SLIP error: "Unknown Server Error" ??

Post by Uri Blumenth » Fri, 19 Jan 1996 04:00:00

Quote:># dip /etc/dipscript
>darkstar: Unknown server error.

>To see if it was a problem with my script, I tried:

># dip -t -v
>darkstar: Unknown server error.

>First off, what does this error message mean?  

It means: read those blooming README files in DIP directory!

Quote:>My local computer
>doesn't know what the name "" refers to?

As you correctly guessed - no it doesn't. So why don't you
assign a hostname to your host and put it in /etc/hosts?

I'm not sure which upsets me more:  that people are so unwilling
to accept responsibility for their own actions, or that they are
so eager to regulate everyone else's.


1. help with SLIP and "unknown server" error

I've finally been able to use dip to connect to my ISP, which is IBM.
When I try to ftp, I get the "unknown server eroor" message.
This are some messages I get:
After I connect with dip:
Then I ping and receive "PING 56 data
After typing netstat -rn it returns
Destination     Gateway         Genmask         Iface slo   slo       lo

 Here are my configuration files, at least the ones I think are relevant.
This is in my

in my /etc/hosts:       localhost dungeon

in my /etc/resolv.conf:


in my /etc/resolve:


in my rc.inet1:


# Attach the loopback device.
/sbin/ifconfig lo
/sbin/route add -net

What else do I have to configure and where did I go wrong on these?

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