https://github.com/ManageIQ/manageiq-providers-vmware/pull/223

Assigning to adam to get credit for the PR.  :)

New commit detected on ManageIQ/manageiq-providers-vmware/master:

https://github.com/ManageIQ/manageiq-providers-vmware/commit/282f0c05c53b9a00321227a1a91e42247074cf6e
commit 282f0c05c53b9a00321227a1a91e42247074cf6e
Author:     Adam Grare <agrare>
AuthorDate: Thu Mar 29 12:07:29 2018 -0400
Commit:     Adam Grare <agrare>
CommitDate: Thu Mar 29 12:07:29 2018 -0400

    Sort unitNumber as an integer not a string

    The get_network_adapters method was sorting NICs by their unitNumber as
    an integer.  This was causing '10' to be sorted before '7', '8', and
    '9'.

    Fixes https://bugzilla.redhat.com/show_bug.cgi?id=1562089

 app/models/manageiq/providers/vmware/infra_manager/provision/configuration/network.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Issue re-cap - The VMware unitNumber value was being sorted assuming it was an integer but was actually a string.  Once the unitNumber went above 9 the sort order was wrong.

unitNumbers were: 7, 8, 9, 10, 11
and were sorted as: "10", "11", "7", "8", "9"

You should be able to find "Config spec:" in evm.log which will dump the config spec structure we send to VMware to help confirm the ordering.

On 5.10.0.20 I was able to attach the NICs in the order that I wanted.