For this patch which affects 4.x and 5.x versions Mirantis published official Tech Bulletin:
https://online.mirantis.com/hs-fs/hub/197500/file-2386174558-pdf/pdf/Mirantis-Technical-Bulletin-2014121702-Slow-Processing-of-IP-Tables.pdf
Consider to move this bug to Won't fix.
For this patch which affects 4.x and 5.x versions Mirantis published official Tech Bulletin:
https:/ /online. mirantis. com/hs- fs/hub/ 197500/ file-2386174558 -pdf/pdf/ Mirantis- Technical- Bulletin- 2014121702- Slow-Processing -of-IP- Tables. pdf
Consider to move this bug to Won't fix.