---
other:
  - |
    The external_mac entry in the NAT table is used to distribute/centralize
    the traffic to the FIPs. When there is an external_mac set the traffic
    is distributed (DVR). When it is empty it is centralized through the
    gateway port (no DVR). Upon port status transition to down, the
    external_mac was removed regardless of DVR being enabled or not, leading
    to centralize the FIP traffic for DVR -- though it was for down ports that
    won't accept traffic anyway.