Re: Where is my SLIP interface

----- Original Message ----- 
From: "Willem Jan Withagen" <wjw_at_withagen.nl>
To: "Lanny Baron" <lnb_at_FreeBSDsystems.COM>; "Greg 'groggy' Lehey"
<grog_at_freebsd.org>
Cc: <current_at_freebsd.org>
Sent: Thursday, September 25, 2003 9:39 AM
Subject: Re: Where is my SLIP interface


> > On Thu, 2003-09-25 at 01:13, Greg 'groggy' Lehey wrote:
> > > On Thursday, 25 September 2003 at  1:12:21 -0400, Lanny Baron wrote:
> > > > On Wed, 2003-09-24 at 22:42, Greg 'groggy' Lehey wrote:
> > > >> On Thursday, 25 September 2003 at  3:04:52 +0200, Willem Jan
Withagen
> wrote:
> > > >>> Hi,
> > > >>>
> > > >>> I'm trying to upgrade my firewall/router to 5.x but I'm getting
> caught by
> > > >>> the fact that I cannot find a 'sl0' interface.
> > > >>
> > > >> Are you really still using SLIP?  What's wrong with PPP?
> > > >>
> > > >>> I've tried the both with if_sl compiled into the kernel as well as
a
> module.
> > > >>>
> > > >>> In neither case does ifconfig show a sl0 device.
> > > >>
> > > >> IIRC it doesn't show now until it's configured.
> > > >
> > > > Perhaps 'The Complete FreeBSD' by Greg Lehey will help out.
> > >
> > > Not any more.  I removed that chapter from the book.  The chapter's
> > > available (also covers UUCP) if anybody wants it; just ask.  But it
> > > seems that Willem has already had SLIP up and running.
>
> I've been running SLIP ever since I started an ISP back in 1994.
> And I'm still using it next to my ADSL for certain traffic that I do not
> want to flow over the the widder net.
> The ADSL was BTW the reason for upgrading, 'cause that poor old 386sx/16Mb
> could not keep up with 8 Mbit/s ADSL :-)
>
> I was also that guy that bought like 50 of 'The Complete FreeBSD' to give
> them to customers who wanted to know more about that nice system with free
> software that solved their problems.
>
> But PPP has the same problem:
>     the interfaces do not show up when listing them with 'ifconfig -a'
> And trying to config it:
>
> router# ifconfig sl0 1.2.3.4 4.5.6.7
> ifconfig: interface sl0 does not exist
> router# kldstat
> Id Refs Address    Size     Name
>  1    3 0xc0100000 3541c8   kernel
>  2    1 0xc1232000 8000     ipfw.ko
>  3    1 0xc151e000 5000     if_sl.ko
>
>
> So we can conclude it is a pilot error, since hell would break loose when
> ppp0 had disapeared.
> But I have this problem on 3 5.x boxes.

Just for "fun" I also compiled if_ppp.ko and loaded that with running pppd
and lo and behold: it gave me ppp0.
Makes me wonder even more....

--WjW