EIOEIO — Input/Output Error
A physical or low-level I/O error occurred during a read or write operation.
ENETDOWNThe local network interface is down and cannot send or receive traffic.
The network interface is administratively down or has lost its link. The cable may be disconnected or the interface may be disabled.
Check interface status with ip link show. Bring the interface up with ip link set IFACE up. Verify physical connectivity.
EIOA physical or low-level I/O error occurred during a read or write operation.
EACCESThe requested access to a file or resource is not allowed by the file permissions.
ENOTCONNA send or receive operation was attempted on a socket that is not connected.
ECANCELEDAn asynchronous operation was canceled before it completed.
SIGPROF (27)A profiling timer set with setitimer(ITIMER_PROF) expired.
SIGALRM (14)A timer set with alarm() or setitimer() has expired.