Print undecoded NFS handles

"-u" option is used to print undecoded NFS handles, and the code is here:

......
if (ndo->ndo_uflag) {
    u_int i;
    char const *sep = "";

    ND_PRINT(" fh[");
    for (i=0; i<len; i++) {
        /*
         * This displays 4 bytes in big-endian byte
         * order.  That's as good a choice as little-
         * endian, as there's no guarantee that the
         * server is big-endian or little-endian or
         * that the file handle contains 4-byte
         * integral fields, and is better than "the
         * byte order of the host running tcpdump", as
         * the latter means that different hosts
         * running tcpdump may show the same file
         * handle in different ways.
         */
        ND_PRINT("%s%x", sep, GET_BE_U_4(dp + i));
        sep = ":";
    }
    ND_PRINT("]");
    return;
}
......