* Don't use GCC union assignment feature (.rrs=0 => .rrs.untyped=0).
* Explictly cast things to [const] struct sockaddr* in syscall args.
* Check whether we need -lsocket.
+ * Include <sys/times.h> in a few more files.
+ * Include <unistd.h> and <sys/time.h> for select.
+ * Look for inet_aton and inet_ntoa (in -lnsl and -lsocket).
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