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a6082eb563
When Netty listens on a socket, it specifies the established connection backlog for the socket. On Linux, Netty tries to read the system-wide configuration for this from /proc/sys/net/core/somaxconn and falls back to a default value when it can not read this value. This commit grants Netty permission to read this file so that it can honor the system-wide configuration for the connection backlog for sockets that it is listening on. This also removes an obnoxious stack trace that appears when Netty logging is set to debug logging. Relates #21840