Apparently, your assumption is correct. I turned off the power for a while, and
started installing the system from scratch (deleted the existing Solaris
partition). There were no errors when configuring network during installation.
When I booted the installed system and logged in to the command line (as you
remember, my video card is not supported by the build I have, so I need to
install the driver for it first), I tried to ping my router (192.168.1.1) and
it replied (!). Both my router's address and my computer network address
(192.168.1.2) could be successfully pinged. Then I installed the NVIDIA driver
for my video card and installed the Open Sound driver collection to enable my
sound card. Rebooted - and got the same "Failed to configure IPv4 interface(s)"
error message in console. So, if I correctly understand the situation, either
my video card or my sound card somehow conflicts with my network card. Maybe,
this happens because the installer doesn't includ a driver for my video card
and thus installs the network driver on "its place". I'm too far from the
hardware level, so cannot speak more correctly about these things. Do you think
that this is the case? If there is indeed a conflict between either video card
or sound card and the network card, can I resolve it by manually editing their
drivers configuration or executing some commands that will change their IRQs?
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