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| Path | csiph.com!eternal-september.org!feeder.eternal-september.org!.POSTED!not-for-mail |
|---|---|
| From | David Todd <HDTodd@gmail.com> |
| Newsgroups | alt.sys.pdp10 |
| Subject | Re: ?TCPIP TOPS-20 <--> Raspberry Pi or Mac OSX |
| Date | Sat, 25 Oct 2025 18:53:20 -0400 |
| Organization | A noiseless patient Spider |
| Lines | 164 |
| Message-ID | <597cce07-dc9b-4f7b-b39c-3bd6d97049e7@gmail.com> (permalink) |
| References | <10dfvld$2k7ba$1@dont-email.me> <87frb7g9po.fsf@atr2.ath.cx> |
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| Injection-Date | Sat, 25 Oct 2025 22:53:24 +0000 (UTC) |
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| Xref | csiph.com alt.sys.pdp10:9761 |
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On 10/24/25 7:29 PM, jayjwa wrote:
> If you want the script (it's pretty Slackware-specific) let me
> know.
First, thank you very much for replying so quickly and with details. I
kept thinking that the tap<n+1> issue was something I was doing wrong
rather than a design feature.
Second, my apologies. Despite having spent several days looking for
solutions, I did not see your posting on the github klh10 site. I don't
know that I'd have resolved the problem, but I'd have known that what I
was seeing wasn't unique.
Finally, yes, I think it would help for me to see your script if you're
willing to share it.
I tried to follow your guidance using the nmcli tools in the Debian
Trixie environment but I'm still unable to connect. As you can see
below, attempting to get to Panda dec20 instance (hosted on "pi-0"),
gets me to the Pi port, not the dec20 port. I'm assuming that I haven't
gotten the bridge set up correctly, so maybe a slackware example will help.
When I get this working correctly for the Pi (again), I'll document it
in detail for others -- I know others running on Pi's have had the same
problem and been unable to solve it.
My setup:
"Pi-0" is the host Pi. Wifi port is 192.168.1.79, "pi-0w".
EN port is not assigned an IP.
Pi-0 doesn't support telnet service but does support FTP
with a vsFTPd installation.
"dec20" is the Panda virtual machine. Its
IP port is 192.168.1.60, assigned as a dedicated
port in the devdef.
What I find trying to access Pi from itself:
$ telnet pi-0w
Trying 192.168.1.79...
telnet: Unable to connect to remote host: Connection refused
Name (pi-0:hdtodd):
$ ftp pi-0w
Connected to Pi-0w.
220 (vsFTPd 3.0.5)
Name (pi-0w:hdtodd):
which shows that Pi-0's telnet fails as expected but ftp works.
Telnet in from Panda host (Pi-0) to dec20 gets:
$ telnet dec20
Trying 192.168.1.60...
telnet: Unable to connect to remote host: Connection refused
Run FTPSER.EXE on the dec20 and try to
FTP from Panda host to dec20 gets
$ ftp dec20
Connected to dec20.
220 (vsFTPd 3.0.5)
Name (dec20:hdtodd):
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.
FTP from dec20 to its host, Pi-0, gets:
@ftp pi-0
?Couldn't connect to Pi-0 - Retransmission timeout
@
Telnet from dec20 to itself gets:
@telnet dec20
Trying... Open
KLH20-2.0h Panda Distribution, PANDA TOPS-20 Monitor 7.1(21733)-4
HDT's KL10/TOPS20
So telnet on the dec20 is working.
The networking configuration on Pi-0 *looks* correct. br0
has the IP address of the dec20 virtual machine, and its
MAC address is the same as eth0.
$ ifconfig
br0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.60 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 fe80::9d97:6b3a:1220:cba4 prefixlen 64 scopeid 0x20<link>
ether dc:a6:32:1a:83:91 txqueuelen 1000 (Ethernet)
RX packets 1876 bytes 972360 (949.5 KiB)
RX errors 0 dropped 7 overruns 0 frame 0
TX packets 645 bytes 51851 (50.6 KiB)
TX errors 0 dropped 69 overruns 0 carrier 0 collisions 0
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
ether dc:a6:32:1a:83:91 txqueuelen 1000 (Ethernet)
RX packets 2215 bytes 1063939 (1.0 MiB)
RX errors 0 dropped 48 overruns 0 frame 0
TX packets 886 bytes 64425 (62.9 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 68 bytes 7471 (7.2 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 68 bytes 7471 (7.2 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
tap0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.79 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 fe80::38ff:5eff:fedc:20f7 prefixlen 64 scopeid 0x20<link>
ether 3a:ff:5e:dc:20:f7 txqueuelen 1000 (Ethernet)
RX packets 46 bytes 5113 (4.9 KiB)
RX errors 0 dropped 17 overruns 0 frame 0
TX packets 101 bytes 8164 (7.9 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.79 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 fe80::27a8:e9fe:8b2f:4f55 prefixlen 64 scopeid 0x20<link>
ether dc:a6:32:1a:83:92 txqueuelen 1000 (Ethernet)
RX packets 848 bytes 119049 (116.2 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 80 bytes 15323 (14.9 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
The klt20.ini definition for the NI has tap0 and the right IP address:
devdef ni0 564 ni20 ipaddr=192.168.1.60 dedic=true ifc=tap0 ifmeth=tap
When booting, dec20 seems to have set up the network:
[KNILDR: Loading microcode version 1(172) into Ethernet channel 0]
[dpni20: ifc "tap0" => ether f2:b:a4:fd:40:a8]
[dpni20: VHOST 192.168.1.60]
[dpni20: Enabled net.ipv4.conf.tap0.arp_accept]
And in operation, it seems to think it's working:
@info internet
Network Todds.Comcast.net host name is DEC20
Network interface type is IPNI, Internet address is 192.168.1.60
Network interface is up, output is enabled
Network service is enabled
Last network interface up transition: 25-Oct-2025 17:27:09
The resolv.config file probably isn't the issue for what I'm seeing,
but it looks correct, too:
$cat resolv.config
; Default (safety belt) nameservers. These are contacted when we
; are completely unable to figure out who ask a particular query.
DSERVE 192.168.1.1
DSERVE 8.8.8.8
;
; Locally loaded zones and search paths.
;
; Remote searches.
RSEARCH . ;Try for fully specified name first
RSEARCH todds.comcast.net
;
; Privileged user(s) who can send resolver control messages
WHOPR OPERATOR ;System Jobs
Back to alt.sys.pdp10 | Previous | Next — Previous in thread | Next in thread | Find similar
?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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