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Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX

From David Todd <HDTodd@gmail.com>
Newsgroups alt.sys.pdp10
Subject Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX
Date 2025-10-30 09:04 -0400
Organization A noiseless patient Spider
Message-ID <0eedd284-76eb-4c71-9718-d26f14f43e9e@gmail.com> (permalink)
References <10dfvld$2k7ba$1@dont-email.me> <87frb7g9po.fsf@atr2.ath.cx> <3b30b25f-63d6-49ca-9158-1d885b69c50f@gmail.com> <U4sMQ.286425$pQe6.88687@fx40.iad>

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Scott, thanks for the suggestions below.  I'll check with brctl as I 
work through the process again today and document that.  I'll also try 
your method for setting up the bridge.  But I run klh10 as root, anyway, 
for other reasons, so I'm not so concerned about device ownership.

On 10/29/25 1:24 PM, Scott Lurndal wrote:
> David Todd <HDTodd@gmail.com> writes:
>> On 10/26/25 2:51 PM, jayjwa wrote:
>>
>> 	>THIS IS THE PI-0 HOST RESPONDING! NOT SURPRISING THAT TELNET
>> 	>DIDN'T WORK AS APPARENTLY 192.168.1.60 ACTUALLY
>> 	>GOES TO 192.168.1.79.
>>
>> 	I think I know why this is...
>>
>>
>> Jayjwa,
>>
>> Thanks for your detailed reply.  I was able to execute most of your
>> script, and it seemed to work fine, except that I don't have the
>> script for "make_set_tuntap".  Could you reply with that?
>>
>> I assumed that it set up the indicated set of taps, so I enabled my
>> tap0 (I'll only have the one, plus the tap1 needed when klh10 starts
>> up its network interface).
>>
>> When I started tap1, as klh10 was loading the NI, I checked with
>> ifconfig and tap1 had the ip address of wan0!  I deleted its
>> address, and subsequently tap0 entirely, but I'm still getting
>> the behavior that ftp to the Pi fails and telnet into the dec20 fails.
>> Again, the ftp from the pi to the dec20 ends up getting connected
>> to the pi.
>>
>> And somewhere along the line, I broke the routing for the Pi, so it can't
>> get to the outside world.  :-)  Fine after reboot of the Pi.
>>
>> So I'll start from scratch again tomorrow.
>>
>> Meanwhile, here's the ifconfig after all my tinkering.  It *looks* like
>> the configuration you suggested I should be seeing, but something's
>> clearly still wrong.  I'll check iroute2 tomorrow.
> 
> What is the output from
> 
> # brctl show
> 
> 
> The sequence I use to create a tap device is:
> 
>           # tunctl -p -u USERNAME -t xxxnic0
>           # brctl addbr xxxbr0
>           # brctl addif xxxbr0 xxxnic0
>           # ifconfig xxxnic0 up
>           # ifconfig xxxbr0 172.25.13.1/24 up
>           # ethtool -K xxxbr0 tx off
> 
> Substitute your username for "USERNAME"; this will
> ensure the tap device is owned by and accessible to
> your user (so you don't have to run simh as root).
> 
> 

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Thread

?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX David Todd <HDTodd@gmail.com> - 2025-10-24 09:40 -0400
  Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX jayjwa <jayjwa@atr2.ath.cx.invalid> - 2025-10-24 19:29 -0400
    Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX David Todd <HDTodd@gmail.com> - 2025-10-25 18:53 -0400
      Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-10-26 03:50 +0000
        Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX David Todd <HDTodd@gmail.com> - 2025-10-26 07:10 -0400
          Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-10-26 21:16 +0000
            Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX David Todd <HDTodd@gmail.com> - 2025-10-27 15:18 -0400
      Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX jayjwa <jayjwa@atr2.ath.cx.invalid> - 2025-10-26 14:51 -0400
    Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX David Todd <HDTodd@gmail.com> - 2025-10-28 18:13 -0400
      Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX jayjwa <jayjwa@atr2.ath.cx.invalid> - 2025-10-29 13:14 -0400
        Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-10-29 23:51 +0000
        Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX David Todd <HDTodd@gmail.com> - 2025-10-30 08:59 -0400
          Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX jayjwa <jayjwa@atr2.ath.cx.invalid> - 2025-10-30 13:51 -0400
      Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX scott@slp53.sl.home (Scott Lurndal) - 2025-10-29 17:24 +0000
        Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX David Todd <HDTodd@gmail.com> - 2025-10-30 09:04 -0400
        Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX jayjwa <jayjwa@atr2.ath.cx.invalid> - 2025-10-30 12:43 -0400
          Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX scott@slp53.sl.home (Scott Lurndal) - 2025-10-30 17:36 +0000
            Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX David Todd <HDTodd@gmail.com> - 2025-11-07 13:30 -0500
              Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX scott@slp53.sl.home (Scott Lurndal) - 2025-11-07 21:48 +0000
              Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX jayjwa <jayjwa@atr2.ath.cx.invalid> - 2025-11-07 17:21 -0500
                Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX David Todd <HDTodd@gmail.com> - 2025-11-08 05:55 -0500
                Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX Lars Brinkhoff <lars.spam@nocrew.org> - 2025-11-08 17:16 +0000
                Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX David Todd <HDTodd@gmail.com> - 2025-11-08 15:33 -0500
                Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX jayjwa <jayjwa@atr2.ath.cx.invalid> - 2025-11-09 17:45 -0500
                Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX Rich Alderson <news@alderson.users.panix.com> - 2025-11-08 20:42 -0500
                Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX jayjwa <jayjwa@atr2.ath.cx.invalid> - 2025-11-08 14:57 -0500
                Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX David Todd <HDTodd@gmail.com> - 2025-11-08 15:37 -0500
                Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX Rich Alderson <news@alderson.users.panix.com> - 2025-11-08 20:47 -0500
                Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX jayjwa <jayjwa@atr2.ath.cx.invalid> - 2025-11-09 17:58 -0500
                Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX Rich Alderson <news@alderson.users.panix.com> - 2025-11-09 21:00 -0500
          Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX David Todd <HDTodd@gmail.com> - 2025-11-01 14:05 -0400

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