[Simh] Vax.exe emulator and Multinet network configuring

Johnny Billquist bqt at softjar.se
Thu May 9 15:11:25 EDT 2019


Repeat after me: WiFi is not ethernet... :-)

What you are trying to do essentially does not work. simh is essentially 
trying to set the interface in promiscuous mode, and fake a second mac 
address on the interface. This works just fine on ethernet, but it does 
not at all work on WiFi, where your AP knows what MAC address you have, 
and will not send packets for another MAC address to your WiFi controller.

   Johnny

On 2019-05-09 16:00, Jonathan Welch wrote:
> The vms systems on our campus are about to be shut down.  My former
> boss and I would like to still have access to our files, so I've moved
> an image of a vax system disk into simh.
> 
> He is a networking expert and I am no slouch, but neither of us can
> figure out why we cannot establish any kind of network connection
> outside of the simh.
> 
> I've looked back in the archives for help but have only found people
> with linux systems or messages of success with UCX.
> 
> This morning I upgraded from Multinet 4.3 to 5.2 and tried to set up
> DHCP but that did not work either.
> 
> Npcap is installed.
> 
> If I set my mac address to be the same as that of the host laptop I
> can use wireshark to see pings coming out from the vax but there are
> no responses.
> 
> I've disabled decnet from starting up to avoid the mac address from
> being changed.
> 
> Some guidance in the right direction would be greatly appreciated.
> 
> ----------
> 
>  From my vax.ini file:
> set xq mac=08-24-d7-ca-1f-40
> att xq eth3
> 
>  From the simh prompt:
> sim> sho eth
> ETH devices:
>   eth0   \Device\NPF_{8E7FBCD3-67EB-4A59-8E35-6713CAB729FA} (Local Area
> Connection 2)
>   eth1   \Device\NPF_{EE67D248-AACC-4A29-99EE-2B84EA08B5EF} (VMware
> Network Adapter VMnet8)
>   eth2   \Device\NPF_{7287895B-5B94-43ED-8AA8-1FF910EA836B} (Wireless
> Network Connection 2)
>   eth3   \Device\NPF_{DC3CD7F8-4BD9-4610-B8DF-20AC5FBD56FC} (Wireless
> Network Connection)
>   eth4   \Device\NPF_NdisWanIp                              (NdisWan Adapter)
>   eth5   \Device\NPF_NdisWanBh                              (NdisWan Adapter)
>   eth6   \Device\NPF_{B1392056-6E69-421B-9814-6011441195C2} (Wireless
> Network Connection 3)
>   eth7   \Device\NPF_NdisWanIpv6                            (NdisWan Adapter)
>   eth8   \Device\NPF_{C7140267-68CB-485A-B343-5751B1865242} (VMware
> Network Adapter VMnet1)
>   eth9   \Device\NPF_{795E27CA-60AA-4A1E-AAB0-99FB62537868} (Npcap
> Loopback Adapter)
>   eth10  \Device\NPF_{62CD8A59-7E13-401A-90AB-3CFBC37554E8} (Local Area
> Connection)
>   eth11  nat:{optional-nat-parameters}                      (Integrated
> NAT (SLiRP) support)
>   eth12  udp:sourceport:remotehost:remoteport               (Integrated
> UDP bridge support)
> Npcap version 0.994, based on libpcap version 1.9.1-PRE-GIT
> Open ETH Devices:
>   XQ     eth3 (Wireless Network Connection)
> Ethernet Device:
>    Name:                    \Device\NPF_{DC3CD7F8-4BD9-4610-B8DF-20AC5FBD56FC}
>    Reflections:             1
>    Self Loopbacks Sent:     2
>    Self Loopbacks Rcvd:     2
>    Host NIC Address:        00:24:D7:CA:1F:40
>    Packets Sent:            2
>    Packets Received:        26
>    Asynch Interrupts:       Disabled
>    Read Queue: Count:       24
>    Read Queue: High:        24
>    Read Queue: Loss:        0
>    Peak Write Queue Size:   0
>    BPF Filter: (((ether dst 08:24:D7:CA:1F:40) or (ether multicast)) and not ((et
> her src 08:24:D7:CA:1F:40))) or ((ether dst 08:24:D7:CA:1F:40) and (ether src 08
> :24:D7:CA:1F:40)) or ((ether dst 00:24:D7:CA:1F:40) and (ether proto 0x9000))
> sim>
> 
> Multinet settings
> MultiNet Network Configuration Utility V5.2(107)
> [Reading in MAXIMUM configuration from MULTINET:MULTINET.EXE]
> [Reading in configuration from MULTINET:NETWORK_DEVICES.CONFIGURATION]
> NET-CONFIG>sho
> Interface                                Adapter     CSR Address    Flags/Vector
> ---------                                -------     -----------    ------------
> se0      (Shared VMS Ethernet/FDDI)       -NONE-        -NONE-       -NONE-
>            [TCP/IP: 10.0.0.150, IP-SubNet: 255.255.255.0, IP-Broadcast:
> 10.0.0.255]
>            [VMS Device: XQA0, Link Level: Ethernet ]
>            DHCP Client for the interface is enabled
> 
> 
> Official Host Name:             vax1
> Default IP Route:               10.0.0.1
> Domain Nameserver:              127.0.0.1
> Timezone:                       EST
> Timezone Rules:                 US/EASTERN
> Load UCX $QIO driver:           TRUE
> Load PWIP (Pathworks) driver:   TRUE
> DHCP Client Flag:               1
> NET-CONFIG>
> _______________________________________________
> Simh mailing list
> Simh at trailing-edge.com
> http://mailman.trailing-edge.com/mailman/listinfo/simh
> 

-- 
Johnny Billquist                  || "I'm on a bus
                                   ||  on a psychedelic trip
email: bqt at softjar.se             ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol


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