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Why does my system appear to disconnect from the network, and I see the errors "kernel: Out of socket memory" in the logs?

Solution Verified - Updated 2013-08-08T15:57:57+00:00 -

Issue

Intermittently, a system may experience a network hang, or an application may be unable to connect to a host or accept new connections.
These error messages may appear:

kernel: TCP: too many of orphaned sockets
kernel: Out of socket memory

The system is fully usable from direct access, via the console.

Environment

Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 5
Red Hat Enterprise Linux 4

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