On ECL 9.10.2 I get "setsockopt: permission denied" unless I comment out this bit in backend/sbcl.lisp:
;; binghe: use SOCKOPT-TCP-NODELAY as internal symbol ;; to pass compilation on ECL without it. (when (and nodelay-specified sockopt-tcp-nodelay-p) (setf (sb-bsd-sockets::sockopt-tcp-nodelay socket) nodelay))
Looks like this kludge doesn't work anymore...
Leslie