Does anything that connects to hipersocket (or your OSA, which you say has a
similar problem) set a portname through DEVICE statement? PORTNAME is not
required since z/VM 4.4 (or 4.3 with a PTF and a certain microcode level),
and I see you are on z/VM 5.2 and you don't use it on DEVICE statement in
z/OS, but maybe something else sets it? If it does, I *think* you still have
to use same portname with any subsequently activated connection to that
shared adapter (hipersocket or OSA). That said, the fact that hipersocket
device *does* initialise in the guest z/OS is confusing, but I don't know
much about z/OS.
Ivica Brodaric

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