Whenever the octavia ovn helper talks to neutron, it seems to create a new TCP connection to the neutron service endpoint along with an eventpoll watcher, without the file descriptor nor the watcher of the old connection being closed. The Singleton constructions in common/clients.py does not seem to prevent this.
(Is this an SDK bug that may not have anything to do with OVN octavia in the end?)
Correction: *Some* of the TCP sockets seem to get reused:
```
apache2 3420779 octavia   20u     IPv4          515704480      0t0       TCP manager.systems.in-a-box.cloud:40470->manager.systems.in-a-box.cloud:11211 (ESTABLISHED)
apache2 3420779 octavia   21u     IPv4          516310909      0t0       TCP api.in-a-box.cloud:50690->api.in-a-box.cloud:5000 (ESTABLISHED)
apache2 3420779 octavia   22u     IPv4          516273896      0t0       TCP api.in-a-box.cloud:56094->api.in-a-box.cloud:mysql (ESTABLISHED)
apache2 3420779 octavia   23r     FIFO               0,14      0t0 515818098 pipe
apache2 3420779 octavia   24w     FIFO               0,14      0t0 515818098 pipe
apache2 3420779 octavia   25u     sock                0,8      0t0 515818102 protocol: TCP
apache2 3420779 octavia   26u     IPv4          516182592      0t0       TCP api.in-a-box.cloud:47694->api.in-a-box.cloud:9696 (CLOSE_WAIT)
apache2 3420779 octavia   27u     sock                0,8      0t0 515818129 protocol: TCP
apache2 3420779 octavia   28u     sock                0,8      0t0 515820532 protocol: TCP
apache2 3420779 octavia   29u     sock                0,8      0t0 515836380 protocol: TCP
apache2 3420779 octavia   30u     sock                0,8      0t0 515895964 protocol: TCP
apache2 3420779 octavia   31u     sock                0,8      0t0 515833072 protocol: TCP
apache2 3420779 octavia   32u  a_inode               0,15        0        64 [eventpoll]
apache2 3420779 octavia   33u     IPv4          516168640      0t0       TCP api.in-a-box.cloud:47720->api.in-a-box.cloud:9696 (CLOSE_WAIT)
apache2 3420779 octavia   34u     sock                0,8      0t0 516016283 protocol: TCP
apache2 3420779 octavia   35u  a_inode               0,15        0        64 [eventpoll]
apache2 3420779 octavia   36u     sock                0,8      0t0 516011446 protocol: TCP
apache2 3420779 octavia   37u  a_inode               0,15        0        64 [eventpoll]
apache2 3420779 octavia   38u  a_inode               0,15        0        64 [eventpoll]
apache2 3420779 octavia   39u  a_inode               0,15        0        64 [eventpoll]
apache2 3420779 octavia   40u  a_inode               0,15        0        64 [eventpoll]
apache2 3420779 octavia   41u     IPv4          516172616      0t0       TCP api.in-a-box.cloud:47714->api.in-a-box.cloud:9696 (CLOSE_WAIT)
apache2 3420779 octavia   42u  a_inode               0,15        0        64 [eventpoll]
apache2 3420779 octavia   43u     IPv4          516188638      0t0       TCP api.in-a-box.cloud:47768->api.in-a-box.cloud:9696 (CLOSE_WAIT)
apache2 3420779 octavia   44u  a_inode               0,15        0        64 [eventpoll]
apache2 3420779 octavia   46u  a_inode               0,15        0        64 [eventpoll]
apache2 3420779 octavia   47u  a_inode               0,15        0        64 [eventpoll]
apache2 3420779 octavia   48u  a_inode               0,15        0        64 [eventpoll]
apache2 3420779 octavia   49u  a_inode               0,15        0        64 [eventpoll]
apache2 3420779 octavia   51u  a_inode               0,15        0        64 [eventpoll]
apache2 3420779 octavia   53u  a_inode               0,15        0        64 [eventpoll]
```