(define-condition network-error (error) ())
+(define-condition simple-network-error (network-error simple-error) ())
+
+(defun simple-network-error (format &rest args)
+ (error 'simple-network-error :format-control format :format-arguments args))
+
(define-condition socket-error (socket-condition network-error) ())
(define-condition address-busy (network-error)