This is not a standards issue. The SIMH FAQ has a more detailed write-up of 
wireless Ethernet.

Wireless Ethernet routers are allowed to do ANYTHING they want to conserve 
wireless bandwidth.
Almost ALL wireless network card drivers and routers drop non-IP packets to 
conserve bandwidth, and reject "unregistered" MAC addresses.
Very few wireless devices will work with non-IP protocols (DECNET IV, LAT, 
Appletalk, etc.)  unless the device has bridge mode enabled and supports non-IP 
protocols in bridge mode.

Regarding your (later) question of LAN bridges: It's the same as the LAT 
question. The device either has to support bridge mode, or you have to fake it 
by tunneling it over the wireless IP connection.

Dave


From: Paul Koning [mailto:[email protected]] 
Sent: Monday, February 15, 2016 1:54 PM
To: Hittner, David T (IS)
Cc: Zane Healy; [email protected]
Subject: Re: [Simh] EXT :Re: simh on RaspBerry Pi


> On Feb 15, 2016, at 1:48 PM, Hittner, David T (IS) <[email protected]> 
> wrote:
> 
> LAT runs fine over the (wired) Ethernet port.
> LAT doesn’t run over wireless Ethernet without major help from the wireless 
> hardware or unless it’s tunneled over IP.

I'm still baffled.  Why doesn't it?  802.11 has the same MAC layer service as 
Ethernet -- broadcast, multicast, unicast, 48 bit addresses, etc.  What 
specifically does LAT do that doesn't work on 802.11?  Is it a standards issue, 
or a case of defective implementations?

        paul


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