/* Try hard to get EOPNOTSUPP defined. 486/ISC has it in net/errno.h,
3B2/SVR3 has it in sys/inet.h. Otherwise, like on MSDOS, use EINVAL. */
/* Try hard to get EOPNOTSUPP defined. 486/ISC has it in net/errno.h,
3B2/SVR3 has it in sys/inet.h. Otherwise, like on MSDOS, use EINVAL. */