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Return whether this system has klibc initramfs network config or not
Will return True if:
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(ii) an open-iscsi interface file is present in the system
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When ip= is seen on the kernel command line in debian initramfs
and networking is brought up, ipconfig will populate
/run/net-<name>.cfg.
The files are shell style syntax, and examples are in the tests
provided here. There is no good documentation on this unfortunately.
DEVICE=<name> is expected/required and PROTO should indicate if
this is 'none' (static) or 'dhcp' or 'dhcp6' (LP: #1621507).
note that IPV6PROTO is also written by newer code to address the
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https://git.kernel.org/pub/scm/libs/klibc/klibc.git/plain/usr/kinit/ipconfig/README.ipconfig
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Return v1 network config for initramfs-configured networking (or None)
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