Well, duplicate IPs is a known problem, nothing new on that. Even on elbereth site you can see "Total Masternodes: 2383 = 2377 actives + 6 inactives [2112 unique IPs]" https://dashninja.pl/masternodes.html or "Current Number of Masternodes: 2384 (unique IPs: 2116)" on page by crowning http://178.254.18.153/~pub/Darkcoin/masternode_payments_stats.html.I don't see how people can be confused on that question, it's clearly that miner's wallet address has nothing to do with that IP.
On the other hand, do you know if this post is really about a problem (that I have no clue what it's talking about)?:
https://dashtalk.org/threads/v0-11-2-x-testing.4202/page-36#post-50756
And this node have yet another IP Address: 37.157.253.66 now but I don't see anything special about it...